Allow to override cinder lvm device from cluster model

Add 'cinder_lvm_default_device' parameter with String type
to make possible to override it from cluster model.

Change-Id: I2deb7b642ba964a3e4b3d21a6f949c227f5bac4e
Related-Bug: https://mirantis.jira.com/browse/PROD-24014
1 file changed