Merge "Add dhcp leasesSubnetPrefixLength and freeze the networkstack aidl v15" am: e64134d173 am: e6a14e3768

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

Change-Id: I2d8d807a6ad184d29b31ca351db0ed0291e465fc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>