Release 2016-07-25

Changelog:

• [CF-490] Delete failed volume
• [CF-490] Mute stdout of fabric
• [CF-490] Make a dump of databases
• [CF-498] Migrate volume with reattaching old files
• [CF-496] Use juno nfs share
• [CF-577] Modify scp copier to avoid "No space left on device" error
• CF-578 oslo.utils version conflict
• [CF-551] Extend functional tests to verify tenant mapping functionality
• Adds ruby style check and linter config
• CF-574 VM migration when backing file is not present
• CF-572 Add sanity checks to override_rules.yaml
• CF-572 Migrate volumes to non-default backends
• [CF-490] Use override rules to override volume_type