[automerger skipped] wifi(vts): Use blocking getService to wait for service to come up am: 2329bba9fe -s ours

am skip reason: Change-Id Ia05f93ba4a28c036315558edbba30f19c2e6ac95 with SHA-1 6d0af445ee is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/12266126

Change-Id: I91b392462f71cdf25cb31fd0402fcb71eb704e7b