Add functional tests for stack tags/hidden stacks

One test creates a stack with a tag, updates the 
tag and then deletes the tag. The second test, 
creates a stack with a tag named 'hidden'. In heat.conf, 
hidden_stack_tags is set to 'hidden' which means 
whichever stack has a tag named 'hidden', stack.list() 
should not pick it up.

blueprint stack-tags

Change-Id: Idf6669ccf5e210d4e6da3733a9ac190418306d98
2 files changed
tree: 0d0575ab35ad71e1e28a57b26ebbc4e5a58be31a
  1. common/
  2. functional/
  3. scenario/