Merge "Add dhcp leasesSubnetPrefixLength and freeze the networkstack aidl v15" am: e64134d173 am: 48ea43dd2f am: e9736f0ccb am: a6d4587091

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2002151

Change-Id: I38b9bc4c72755b3b82159a14391760b7c77c5214
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>