Fix bug: authentication error when deploy vRNC with nfv tosca template

Fix bug: authentication error when deploy vRNC with nfv tosca template

When deploy vRNC, the follow errors occured:
 openstack stack create -t ./vRNC_Hot_Template.yaml vRNC_Stack
The request you have made requires authentication. (HTTP 401)
(Request-ID: req-d0ddd5bd-5291-4b2f-ab92-95618881647a)

The reason is that creating user is before creating project, and the
order will be reverse.

JIRA:PARSER-90

Change-Id: I890be71bfe7b2ec5f393f235c4c79c705340dfaa
Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>