Merge "Add IGMP network stack constants" into main am: b69182f217

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3344904

Change-Id: I3a03ef9e7b588978a1105a2648ef1f421adf5e6c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>