forall_vanir: use repo forall environment, rather than sed slapchopping lines of the manifest

Change-Id: Iea71fd133f4fc04cf5a55ff0e9beb4274ad250bf
forall_vanir: prevent  partial matches

Change-Id: Ifb26f8427af7d41b65b751a56a2d105609d7d0c9
forall_vanir: one-liner-fy

Change-Id: I5357fb831b1c2b8d7f9be7fde10d439bd0e9382c
Merge branch 'kk44' of https://github.com/VanirAOSP/build into vanir