Tagging 2.2.2-rc3

1. 9fc3d0e Fixes typo by daniel park · 7 years ago
2. c108a6b Fix typos detected by Frank Wang by Ray Milkey · 7 years ago
3. a09fe5b Updating Copyright line to Open Networking Foundation by Brian O'Connor · 7 years ago
4. f9a16ed Fixed to not to create gateway group if it is already exists by Hyunsun Moon · 8 years ago
5. d331afd Fix to update gateway group only if new gateway is added by Hyunsun Moon · 8 years ago
6. 176c83d [ONOS-4871] Fix gateway external port from list to single port by Kyuhwi Choi · 8 years ago
7. 92d9ea4 [ONOS-4481] Integrate scalable gateway to openstackRouting by Kyuhwi Choi · 8 years ago
8. dc2973b [ONOS-4478][ONOS-4479] Implement scalable gateway get methods and gateway node management by Kyuhwi Choi · 8 years ago
9. 7170129 Fixed duplicate package issue and javaDoc warnings by Hyunsun Moon · 8 years ago