envsetup:pspush: Simplifying push to gerrit with git

Adds simmplicity to uploading commits/patch sets to AOKP's
gerrit instance. Makes it much easier for mobile developing via ssh ;)

For my own use

Change-Id: Id11b2ea1f30dbfb8dc047b2c72cecaac70ddceaf
Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>