Fixes during regression run

1) Sometimes, a reboot takes longer..Wait for a bit more
2) Force verify in test_shutoff_vm_route_withdrawal() so that vm cleanup
   verification in agent passes even when verify_on_setup=False is set

Change-Id: If4c186f092f13368e997c0d6ee8f979bf9deeda4
Merge "Fixes during regression run" into R2.0