Add PostgresSQL capabilities to monasca devstack

Registered by Tomasz Trębski

Blueprint aims to extend the monasca's devstack plugin with PostgreSQL database support.
Currently all the tempest test are run using MySQL.
However since Monasca supports ORM layer it should be essential to have another major database tested via tempest at CLI gates.

A result of this BP should be:
- Gates are running as they were with PostgreSQL support included (but disable)(backward compatibility)
- Gates definitions are extended (openstack-infra project) with ability to run also with PostgreSQL enabled

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
Tomasz Trębski
Direction:
Approved
Assignee:
Tomasz Trębski
Definition:
New
Series goal:
None
Implementation:
Implemented
Milestone target:
None
Started by
Tomasz Trębski
Completed by
Tomasz Trębski

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.openstack.org/#q,topic:postgres,n,z

Addressed by: https://review.openstack.org/356403
    Enabling Postgres + ORM in devstack

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Work Items

This blueprint contains Public information 
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