connectors.pp modified in order to be compliant with the modification of the iaas::role::endpoint::coordination variable in common.yaml

Private network(s) and router creation commented due to a not working enviroment when configuring test tenant.
The problem comes when controller-node and network-node are separed.

added possibility of changing ip addresses of single database node. Requiring percona module > 1.0.0

insered a variable (default on classic hostname) in rhmk role for changing hostname in /etc/rabbitmq/rabbitmq-env.conf

Added resources as neutron_config, glance_api_config and glance_registry_config to prevent related workaround