Python-tutum

- disable save operation on container object
- extract action-uri from response header and put it in the json object
- end export endpoint to stack object
- silence InsecurePlatformWarning

Stream API:
- silence the auth event in tutum stream api
- not reconnect to the stream sever when authentication fails
- allow pass arguments to run_forever command

- make stream api auto reconnect
- return the decoded json event object

- add TutumEvents class for streaming API
- allow PATCH to a node object. ( can set tags on node)
- add method for fetch object by resource uri
- add method for fetch object by identifier(name, short uuid, long uuid)

stack endpoint