Tagging 2.2.6-rc1

1. a09fe5b Updating Copyright line to Open Networking Foundation by Brian O'Connor · 7 years ago
2. 0a4dd38 FIxed startup scenario and re-worked cluster restart to use shutdown and startup scenarios. by Thomas Vachuska · 7 years ago
3. db9b7f4 Added ability to kill ONOS process after waiting for it to peacefully stop. by Thomas Vachuska · 7 years ago
4. 3101b9b Modified HA test scenarios to fail fast. by Thomas Vachuska · 7 years ago
5. 822bc14 Increased tolerance for node stop/start and for topology convergence. by Thomas Vachuska · 7 years ago
6. 13a93f3 Added tool to verify that ONOS server has stopped; added HA cluster restart scenario. by Thomas Vachuska · 7 years ago