Fix a typo in parameters.yaml
Fix a typo in parameters.yaml

Removed redundant 'is'.

TrivialFix

Change-Id: Iae1e3c1914a0439b93db62e8c86e25c8b3980c15

openstack/manila,bswartz/manila,vponomaryov/manila,openstack/manila,vponomaryov/manila,bswartz/manila