Merge "Adds SipDelegateManager#triggerFullNetworkRegistration API" am: c254833490 am: abd6be2ed6 am: 4279308ad7

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1521013

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I2e2fac076546f21351de919516befa625d523660