[automerger skipped] Merge "Rename IDhcpLeaseCallbacks to IDhcpEventCallbacks for more generic." into rvc-dev am: 210adac5fa am: f8006ef1b9 am: 98c72a1b58 am: fe058ccca2 -s ours

am skip reason: Change-Id I66614fbf67fba1e7dab0b8a2d41bc30a726e4f38 with SHA-1 06c8ba0cd7 is in history

Change-Id: Ic122ef3e60d607b4679808a46bd711f3efc51973