Description of problem:
When defining the rbd's through ceph-iscsi-ansible, you provide a pool and image name. The issue is when the image is defined to the lio gateways it only uses the image component - as a result creating a configuration with the same image name from 2 or more pools fails.


Version-Release number of selected component (if applicable):
1.3 and below of ceph-iscsi-ansible/ceph-iscsi-config

How reproducible:
Always

Steps to Reproduce:
1.Create a cluster with multiple pools
2.attempt to create a gateway configuration where the same image name is used from multiple pools

3.

Actual results:
failed: [ceph-1] => (item={'image': 'ansible4', 'host': 'ceph-1.test.lab', 'pool': 'iscsi', 'size': '5G'}) => {"failed": true, "item": {"host": "ceph-1.test.lab", "image": "ansible4", "pool": "iscsi", "size": "5G"}}
msg: failed to add ansible4 to LIO - error(Storage object block/ansible4 exists)

Expected results:
configuration tools should allow the same image name to be used for rbd's backed by different pools

Additional info:
Current code level uses just the image name when creating a storage object within LIO - which won't be unique when dealing with multiple pools