Merge "Add new APIs in NetworkCapabilities to set and get underlying networks" am: 39379a40bd am: f96e107603 am: 660904140c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1829934

Change-Id: Ieae0c554ef5e23fd61249c9f42099279e76fe9e1