Use BUILD_USER_ID for jenkins build

Change-Id: I19a21e2a846f61a984cff910db85eb7ddbfdfaa9
Use android-legay
fix github & {}.format

Change-Id: If24048870389fff1c0c0ca1cd81f14b924a3692f

Conflicts:
	tools/roomservice.py
customsetup.sh: Add gerrit function

Creates gerrit remote to push, gerrit then replicates to github

To push directly : git push gerrit android-4.4
Upload for review : git push gerrit HEAD:refs/for/android-4.4

Change-Id: I07a2d9c6bf9eb37a667aebd5c3d85424b2d1f591
Some useful functions to manage branches, tags and upstream changes

Change-Id: If9908b20a91ac58ae709a777d2adb2ec4938292f