Fix smoke tests to work with new assigned IPs; add stop service test to prevent leaking iptables rules
Fix a race in address assignment
Merge pull request #1382 from control-center/feature/CC-579

Fix smoke tests to work with new assigned IPs; add stop service test to prevent leaking iptables rules
Merge branch 'develop' of github.com:control-center/serviced into feature/CC-580

* 'develop' of github.com:control-center/serviced:
  Fix a race in address assignment
  Fix smoke tests to work with new assigned IPs; add stop service test to prevent leaking iptables rules

Conflicts:
	node/agent.go