Merge "wifi(vts): Use blocking getService to wait for service to come up" into rvc-dev am: 5afe29b247 am: 5cbceb81fb

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/12204704

Change-Id: Icd5e0bbd38704f3ef318300ca01f78b4a78c54c4