So, ```bind_host``` is correct, but we need a ```ha_bind_host``` that would be something like:
```
:ha_bind_host    => node[:glance][:api][:bind_open_address] ? "0.0.0.0" : cluster_ip
```
where ```cluster_ip``` is computed like this:
https://github.com/crowbar/barclamp-nova/pull/328/files#diff-1a50bf20db87e033d2d048b8d0036258R23