Release 2016-05-10

Changelog:

• [CF-356] Implement query command
• [CF-401] Fix reset_state not makeing several attempts
• [CF-399] Print configuration, filter and scenario
• [CF-437] Use cliff library
• [CF-436] Add ImageMember migration.
• CF-459 Verify subnet's DHCP option is preserved during migration
• [CF-458] Set enable_dhcp to original value on destination.
• [CF-454] Use pbr library
• CF-453 Image migration failed with invalid ID.
• CF-333 Extend functional tests to verify migration of config_drive VM attribute
• [CF-442] Fix absent image detection when it was deleted previously
• [CF-433] Handle image deleted from glance backend.