Register network tracing in system_server after boot am: 1b71b7f70b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2381738

Change-Id: Ic4068263726543f16f884177c8d6a8ed0a0aad8a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>