Add equals, hashCode to MulticastRoutingConfig am: d25444ffce

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2801433

Change-Id: I6a151d224abb4f3a466452a492b4b2136f6268be
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>