Merge "Skip stop if keepalive is already in stopping state" am: cb79f645d4 am: 65bcfe173f am: b3692b0365

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1424190

Change-Id: I0d55c6f7e876a786cbe7f301d0caecbe6456af36