[automerger skipped] wifi(vts): Use blocking getService to wait for service to...

[automerger skipped] wifi(vts): Use blocking getService to wait for service to come up am: 2329bba9 -s ours am: 1deae073 -s ours am: 818ef857 -s ours am: 99059e43 -s ours

am skip reason: Change-Id Ia05f93ba4a28c036315558edbba30f19c2e6ac95 with SHA-1 2329bba9 is in history

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

Change-Id: I2d1b173b3519c564007c41c34ca950ec570be497