Merge "libprocessgroup: Proceed if activation of an optional controller fails"...

Merge "libprocessgroup: Proceed if activation of an optional controller fails" am: 05c7e3c0 am: 850bac57

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2424613



Change-Id: I3422ebffc81fc3390ab1061a6915b2aa2be469f1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>