Merge "Add tests to ensure IMS feature tags are sent in IMS registration updates" am: 5d91e8c5b9

Original change: https://android-review.googlesource.com/c/platform/cts/+/1584511

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I065c30d71464c53b19c9cd48bd47e5ecdf898b3c