fixed setup_contrail to use $PHYSICAL_INTERFACE, $SERVICE_HOST, $contrail_gw_interface

install redis and tunctl in ubuntu

redis uses non-standard port so made custom contrail/etc/redis.conf.
RH and Debian install redis.conf in different directories
be root to rsync /etc/contrail
Merge remote-tracking branch 'dsetia/master' into contrail
dsetia patch for multinode
added localrc examples
fixed localrc-compute
testing new master localrc
get link addr from alias ifaces like eth0:0
get link addr from alias ifaces like eth0:0
Merge branch 'contrail' of github.com:noelbk/devstack into contrail
support alias interfaces like eth0:0
got vhost0 to work with eth0
compute host works.  remote VMs get attached to contrail's vhost0
Merge remote-tracking branch 'dsetia/master' into contrail
reverted support for alias interfaces like eth0:0.  Alias interfaces don't work for other reasons
re-enable fetch_packages
Merge pull request #4 from noelbk/contrail

Cleanup and many updates from Noel