Make mPermissionMonitor in ConnectivityService private am: f360aa6058

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2405717

Change-Id: I7d24e6c0152992455323f4443fe80185dd88167d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>