Adding credentials for service user

The aim of the patch adds credentials for service user located
under [cinder] section. Parameter are going to be passed to config
file have to be located in pillar under identity branch. For
instance:

 nova:
  controller|volume:
    identity:
      region:
      username:
      password:

Change-Id: I59530258bb2dcb8ab8f054c159657a0930caa3de
Related-PROD: PROD-29459
4 files changed