Includes two enhancements to support VPNaaS and allow other
vendor implementation support. Goal is to provide a solution
for VPN .ini files until a more general solution can be defined
to handle all reference and vendor .ini files.

First, the /opt/stack/neutron/etc/vpn_agent.ini file is copied
to /etc/neutron, to allow the selected device drivers for agent
to be specified. Both reference and vendor implementations can
be uncommented in this file, prior to stacking.

Second, to allow vendor VPN implementations to provide an .ini
file to the agent at start-up time, an environment variable is
defined and can be set in the localrc to specify one or more
.ini files. The desire is NOT to include vendor settings in the
global vpn_agent.ini.

Change-Id: Ia8250db660216a5296cb6ba2af1538b8c90d187c
Closes-Bug: 1301552

The sshd reconfiguration to listen on port 2222 provides no
benefit and complicates deployment on some systems.  This removes
the reconfiguration and instead just confirms SSH connectivity.
Default SSH host and ports are left configurable, but the port now
reflects the default 22.

Change-Id: Iaf7c71854c3741a505a79037ffb8c86ace74fc27

Swift was missing an 'if [[ $SYSLOG != "False" ]]' statement which is used
by other services, and therefor failed with a 'No such file or directory'
error when 'SYSLOG=False' was set in localrc.

Closes-Bug: 1308461

Change-Id: I8655a955ebb322516d92bee418b93d4cc23bdc5c

manual local merge stack.sh from devstack-icehouse/master to devstack/stable/icehouse

nimbosa/devstack-icehouse forked from openstack-dev/devstack, merged

merge diff from 2014 March to April 17