murano-db-manage doesn't allow to query 'current' version

[ruhe]

In order to be able to check whether the DB is up to date we need to implement cli call:
$ murano-db-manage version
which will return current DB revision.

This functionality is not implemented yet:
http://git.openstack.org/cgit/stackforge/murano/tree/murano/db/migration/migration.py#n28

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/107198

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/107198
Committed: https://git.openstack.org/cgit/stackforge/murano/commit/?id=a25e041242dbf772bb872d2d8a19b03ee70c80ca
Submitter: Jenkins
Branch: master

commit a25e041242dbf772bb872d2d8a19b03ee70c80ca
Author: Ruslan Kamaldinov <email address hidden>
Date: Wed Jul 16 02:44:02 2014 +0400

    Add version command to murano-db-manage

    Now we can use "murano-db-manage version" to print current
    migration version applied to the database.

    Change-Id: I933faaacd98b85cfa0b86bfc8c2c70d2548ac573
    Closes-bug: #1342259