`bind_host` and `bind_port` are coming under `api_setting
`bind_host` and `bind_port` are coming under `api_setting

Option 'bind_host' from group 'DEFAULT' is deprecated for removal[0],
please use option 'bind_host' from group 'api_settings' instead. bind_port
option are the same.
The default value of api_handler is queue_producer, we did not configure
it. So delete api_handler option.

[0]https://github.com/openstack/octavia/blob/master/octavia/common/config.py#L45

Change-Id: I4e9c1d40bcb497f147ea38d4f3c6d78c181fa20b
Closes-Bug: #1717190

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible