Deliver a proof of concept to enable autonomous deployment of subsystems in the integration environment

As part of this investigation we aim to demonstrate a workable solution that enables: 

• each team to directly deploy into an integration environment from their subsystem integration repository
• services team to have a consolidated view of how an environment is composed at any time, plus its history
• integration tests in skampi can be triggered and executed against the integration environment 

We anticipate that a number of Gitlab features can be leveraged to achieve this outcome, but we should always bear in mind some important constraints: 

• our final target environment is not the techops cluster, but the ITF, CPF and SPC environments
• subsystem level integration charts should be used as they are when deploying into the integration environment via helm