Execution Server 7.0 Template connecting to an existing Database container

Today we have two types of execution server templates:

1. Execution Server + Database - starts the server in one node and database in another node
2. Execution Server + External Database - starts the server and connects to existing database via DB HOST URL

We would need one more template when we consider the following use case:

1. Create a new OpenShift project
2. Add database template (MySQL)
3. Add this new Execution Server template which will connect to the previously created database node via its Service Name (not HOST URL)
4. Add another container of this new Execution Server template which will connect to the same database node

There are few reasons why we need this template:

• to share database among execution servers with different projects and different scalability needs
• to reuse existing database container with related business data so that all information is in a single database for joined queries
• etc.

The template should include all database drivers which we support on OpenShift (MySQL, PostgreSQL, and any others?).