provision for HA rabbit with keepalived vip failover and shared erlang cookie
restart keepalived on new vrrp
tidy up
make rabbit live and die.

- add track_script
- redefine rabbit restart command overwriting opscode definition
- die rabbit die
- manage cookie generation here, not in opscode cookbook
- I hate you rabbit
Merge pull request #11 from mancdaz/ha-rabbit

Merged automatically by jenkins after successful build test