Merge changes from topic "cherry-pick-cell-keepalive" am: 972b0961b5
am: 0da9c9d5b9

Change-Id: Ib4ba3f739a91ea2700611732f71afec0cc997ae4
tree: 4416dfcf3ada0ba7591cac8084e063e658936f75
  1. core/
  2. services/
  3. tests/