Description of problem: Now gluster ansible roles only support to create gluster volumes across all nodes, but incase of 6 nodes usecase if user wants to create some volume in 3 nodes and other volumes in other nodes then it's not possible now. Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Should have way to create volume for specific nodes