Details the new process for releasing xstatic packages.
Change-Id: If763a5266c970ddc6fe133fd9a773b278238d285
Depends-On: Idb36459bcdfd85d7765e849dfda105437bb8bd0c
Depends-On: I14e0b5986d3433afd796ea44e66dfafd5003e732
Implements: blueprint xstatic-release-process