Update requirements.txt

Rookout/Rookout#2521 (Rookout#8)

fixed rook import api

Merge pull request Rookout#7 from Rookout/new-api-usage

Update rookout import and usage to new api

Fixing import position

add pip as prereq (Rookout#6)

minor phrasing fixes (Rookout#5)

Added README to tutorial and Updated for agentless use - Rookout/Rook…

…out#2230 (Rookout#4)

Update rook version

upgraded rook version