This creates the stable/wallaby branch for all client and non-client libraries
now that we are past the lib freeze on March 11.
If a team wants to wait for a specific patch to make it to the library,
someone from the team can -1 the patch to have it held,or update that
patch with a different commit SHA.
Patches with no response will be merged by Friday, March 19.
Change-Id: I906c016b142e28d741fd6af14eeef9d870ebf283