Support for git volume in Openshift

Issue

• For technical openshift extensions (controllers) or other platform management purposes (managing metadata about tenants, their ingress and egress routers and associated nodes, as well as mapping of certain security attributes of applications towards such routers) the customer would like to store such information in a versioned versioning system, specifically git. This would allow for the git volume to be periodically mounted (see controller of fabric 8 for that), and acct according to the new information in the target environment.