Merge changes from topic "configure_bpf_for_clat"

* changes:
  [CLATJ#20] ClatdCoordinator: stop bpf for clat
  [CLATJ#19] ClatdCoordinator: configure bpf for clat
  [CLATJ#18] libclat: move clat tc and bpf utilis from netd
  [CLATJ#17] bpf_connectivity_headers visible to libclat