floating ips work on single host.  clean out cassanddra and redis databases in stack.sh startup
added screen logging to localrc
added test_network.sh script to test networks and floating ips
added net_policy_join.py to use Contrail to create a routing policy between net1 and net2
Merge remote-tracking branch 'dsetia/master' into contrail
Merge remote-tracking branch 'dsetia/master' into contrail
Merge branch 'contrail' of github.com:noelbk/devstack into contrail
use cirros test image if available
cloudinit.sh script injection works
refactored functions for creating/associating floating ips
regenerate sshkey without prompts
added test for complex network
test_network_complex works on multi-host
Merge pull request #18 from noelbk/contrail

Contrail