test: relax the timing window in test-child-process-fork-net2.js

In Linux, simple/test-child-process-fork-net2.js fails intermittently.

In SuSE Linux system, under network high load situations, this failure is
consistently reproducible.

The test case tests whether the TCP connections which were established between
the processes terminate in a timely and clean manner. After some iterations of
data transfer on established connections, the server is closed. The server does
not get closed immediately, instead waits for all the active connections to
terminate. A timed (200ms) callback closes the connections, which eventually
closes the server.

The start is the time when the server close is invoked.
The end is the time when the server is actually closed(onClose call back invoked).

Given that there is a minimum delay of 200ms before the connections are
terminated, expecting the elapsed time above 190 is reasonable and fair,
but looks like the leeway of 800ms for the upper bounds seem to be too
stringent, and breaking some scenarios of network load.

Reviewed-By: Michael Dawson <[email protected]>
PR-URL: nodejs#14129

2015.03.31, Version 0.12.2 (Stable)

* uv: Upgrade to 1.4.2

* npm: Upgrade to 2.7.4

* V8: do not add extra newline in log file (Julien Gilli)

* V8: Fix --max_old_space_size=4096 integer overflow (Andrei Sedoi)

* asyncwrap: fix constructor condition for early ret (Trevor Norris)

* buffer: align chunks on 8-byte boundary (Fedor Indutny)

* buffer: fix pool offset adjustment (Trevor Norris)

* build: fix use of strict aliasing (Trevor Norris)

* console: allow Object.prototype fields as labels (Colin Ihrig)

* fs: make F_OK/R_OK/W_OK/X_OK not writable (Jackson Tian)

* fs: properly handle fd passed to truncate() (Bruno Jouhier)

* http: fix assert on data/end after socket error (Fedor Indutny)

* lib: fix max size check in Buffer constructor (Ben Noordhuis)

* lib: fix stdio/ipc sync i/o regression (Ben Noordhuis)

* module: replace NativeModule.require (Herbert Vojčík)

* net: allow port 0 in connect() (cjihrig)

* net: unref timer in parent sockets (Fedor Indutny)

* path: refactor for performance and consistency (Nathan Woltman)

* smalloc: extend user API (Trevor Norris)

* src: fix for SIGINT crash on FreeBSD (Fedor Indutny)

* src: fix builtin modules failing with --use-strict (Julien Gilli)

* watchdog: fix timeout for early polling return (Saúl Ibarra Corretgé)

test: relax the timing window in test-child-process-fork-net2.js

In Linux, simple/test-child-process-fork-net2.js fails intermittently.

In SuSE Linux system, under network high load situations, this failure is
consistently reproducible.

The test case tests whether the TCP connections which were established between
the processes terminate in a timely and clean manner. After some iterations of
data transfer on established connections, the server is closed. The server does
not get closed immediately, instead waits for all the active connections to
terminate. A timed (200ms) callback closes the connections, which eventually
closes the server.

The start is the time when the server close is invoked.
The end is the time when the server is actually closed(onClose call back invoked).

Given that there is a minimum delay of 200ms before the connections are
terminated, expecting the elapsed time above 190 is reasonable and fair,
but looks like the leeway of 800ms for the upper bounds seem to be too
stringent, and breaking some scenarios of network load.

2015.03.23, Version 0.12.1 (Stable)

* openssl: upgrade to 1.0.1m (Addressing multiple CVES)

2015.03.23, Version 0.10.38 (Maintenance)

* openssl: upgrade to 1.0.1m (Addressing multiple CVEs)

2015.03.11, Version 0.10.37 (Maintenance)

* uv: update to 0.10.36 (CVE-2015-0278)

* domains: fix stack clearing after error handled (Jonas Dohse)

* buffer: reword Buffer.concat error message (Chris Dickinson)

* console: allow Object.prototype fields as labels (Julien Gilli)

* V8: log version in profiler log file (Ben Noordhuis)

* http: fix performance regression for GET requests (Florin-Cristian Gavrila)

2015.02.06, Version 0.12.0 (Stable)

* npm: Upgrade to 2.5.1

* mdb_v8: update for v0.12 (Dave Pacheco)

2015.01.29, Version 0.11.16 (Unstable)

* openssl: Upgrade to 1.0.1l

* npm: Upgrade to 2.3.0

* url: revert support of `path` for url.format" (Julien Gilli)

* assert: use util.inspect() to create error messages (cjihrig)

* net: throw on invalid socket timeouts (cjihrig)

* url: fix parsing of ssh urls (Evan Lucas)

2015.01.26, Version 0.10.36 (Stable)

* openssl: update to 1.0.1l

* v8: Fix debugger and strict mode regression (Julien Gilli)

* v8: don't busy loop in cpu profiler thread (Ben Noordhuis)

2015.01.20, Version 0.11.15 (Unstable)

* v8: Upgrade to 3.28.73

* uv: Upgrade to 1.0.2

* npm: Upgrade to v2.1.6

* uv: float patch to revert tty breakage (Trevor Norris)

* v8: re-implement debugger-agent (Fedor Indutny)

* v8: apply floating irhydra patch (Fedor Indutny)

* v8: fix postmortem-metadata generator (Refael Ackermann)

* debugger: fix unhandled error in setBreakpoint (Miroslav Bajtoš)

* async-wrap: add event hooks (Trevor Norris)

* async-wrap: expose async-wrap as binding (Trevor Norris)

* buffer, doc: misc. fix and cleanup (Trevor Norris)

* buffer: add generic functions for (u)int ops (Yazhong Liu)

* buffer: fix and cleanup fill() (Trevor Norris)

* buffer: mv floating point read/write checks to JS (Trevor Norris)

* build, i18n: improve Intl build, add "--with-intl" (Steven R. Loomis)

* build: add small-icu support for binary packages (Julien Gilli)

* build: do not generate support for libuv's probes (Julien Gilli)

* build: i18n: add icu config options (Steven R. Loomis)

* build: i18n: support little-endian machines (Steven Loomis)

* build: vcbuild fix "The input line is too long." (Alexis Campailla)

* child_process: improve spawn() argument handling (cjihrig)

* cluster: avoid race enabling debugger in worker (Timothy J Fontaine)

* cluster: cluster.disconnect() should check status (Sam Roberts)

* cluster: do not signal children in debug mode (Fedor Indutny)

* cluster: don't assert if worker has no handles (Sam Roberts)

* core: fix usage of uv_cwd (Saúl Ibarra Corretgé)

* core: replace uv_fs_readdir with uv_fs_scandir (Saúl Ibarra Corretgé)

* crypto: createDiffieHellman throw for bad args (Trevor Norris)

* crypto: lower RSS usage for TLSCallbacks (Fedor Indutny)

* crypto: store thread id as pointer-sized (Alexis Campailla)

* dns: propagate domain for c-ares methods (Chris Dickinson)

* fs: fix symlink error message (Vladimir Kurchatkin)

* http: Improve _addHeaderLines method (Jackson Tian)

* http: cleanup setHeader() (Trevor Norris)

* http: rename flush to flushHeaders (Timothy J Fontaine)

* lib,src: fix spawnSync ignoring its 'env' option (Juanjo)

* modules: adding load linked modules feature (Thorsten Lorenz)

* net: Make server.connections un-enumerable (Patrick Mooney)

* net: add pauseOnConnect option to createServer() (cjihrig)

* net: make connect() input validation synchronous (cjihrig)

* node: avoid automatic microtask runs (Vladimir Kurchatkin)

* node: fix throws before timer module is loaded (Trevor Norris)

* openssl: fix keypress requirement in apps on win32 (Fedor Indutny)

* path: added parse() and format() functions (Rory Bradford)

* path: allow calling platform specific methods (Timothy J Fontaine)

* path: don't lower-cases drive letters (Bert Belder)

* path: refactor normalizeArray() (Nathan Woltman)

* process: pid can be a string in process.kill() (Sam Roberts)

* readline: fix performance issue when large line (Jicheng Li)

* readline: should not require an output stream. (Julien Gilli)

* smalloc: check if obj has external data (Vladimir Kurchatkin)

* smalloc: don't allow to dispose typed arrays (Vladimir Kurchatkin)

* smalloc: fix bad assert for zero length data (Trevor Norris)

* smalloc: fix copyOnto optimization (Vladimir Kurchatkin)

* src: all wrap's now use actual FunctionTemplate (Trevor Norris)

* src: fix VC++ warning C4244 (Rasmus Christian Pedersen)

* src: remove Async Listener (Trevor Norris)

* stream: switch _writableState.buffer to queue (Chris Dickinson)

* streams: make setDefaultEncoding() throw (Brian White)

* streams: set default encoding for writable streams (Johnny Ray)

* tls: remove tls.createSecurePair code deprecation (Jackson Tian)

* tls_wrap: ignore ZERO_RETURN after close_notify (Fedor Indutny)

* url: change hostname regex to negate invalid chars (Jonathan Johnson)

* url: fixed encoding for slash switching emulation. (Evan Rutledge Borden)

* url: improve parsing speed (CGavrila)

* url: make query() consistent (Gabriel Wicke)

* url: support `path` for url.format (Yazhong Liu)

* util: add es6 Symbol support for `util.inspect` (gyson)