Merge changes from topic "attach_bpfprog_in_mainline"

* changes:
  [NFCT.TETHER.15] Attach BPF program in the mainline module
  [NFCT.TETHER.14] Clear the BPF maps in BpfCoordinator ctor
tree: b4accf19085a9825cb5d115ffb752750ffd5239c
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING