envsetup:pspush: Simplifying push to gerrit with git

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

Change-Id: Id11b2ea1f30dbfb8dc047b2c72cecaac70ddceaf
Signed-off-by: Brandon McAnsh <brandonm@matricom.net>
pspush: updates and fixes

  *fix nomenclature (this is bash, not java)
  *break into multiple funtions for flexibility
  *add some error/redundancy checking
  *automatic revision lookup
  *definition and variable revision

Signed-off-by: KhasMek <Boushh@gmail.com>