Tagging 2.2.2-rc4

1. 15a3c2e Fix: remove network related flow rules on openstack network removal by Jian Li · 4 years, 4 months ago
2. e6e609f Refactor external peer router store, fix NPE due to MAC is not ready by Jian Li · 5 years ago
3. 5ecfd1a Refactor: reduce to number of column for better readability at SONA by Jian Li · 6 years ago
4. 8f64feb Add precommit capability to openstack port service to resolve NPE by Jian Li · 6 years ago
5. 156c96f Refactor: split api from single bundle for openstacknetworking by Jian Li · 6 years ago[Renamed from apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/api/OpenstackNetworkEvent.java]
6. 0c47d53 Deprecate joda-time by Yuta HIGUCHI · 7 years ago
7. a09fe5b Updating Copyright line to Open Networking Foundation by Brian O'Connor · 7 years ago
8. ae51e73 Added sync and purge security group states by Hyunsun Moon · 7 years ago
9. 6a9ff0d [ONOS-6137] Refactoring SecurityGroup features for stateful SONA by sangho · 7 years ago
10. 44aac66 ONOS-5182 Refactored SONA to cache network states by Hyunsun Moon · 7 years ago