Merge "Add a common test library." am: aa6821b805
am: 4343cf32aa

Change-Id: I6104a1a677cb2e4978f11be32dfc604ee431d009
tree: f1df7766c1f6a8ca136f968d5b4eb75a065ad930
  1. core/
  2. services/
  3. tests/