Merge "RpcServer: let system allocate vsock ports" into main am: aa30575a7c am: 3632e944a2

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/3136053

Change-Id: Ief240c3d75b8d321582f2a5e5c3fdabcf9855f0a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>