Add CD feature to the repo

1. Add a GitLab CD file to deploy the images created at ohpc-packer via Terraform.
2. Use the existing routers and networks for Terraform deploy
3. Added a submodule for CRI_Cluster_Monitor and updated the existing one for CRI_XCBC
4. Refactored code to work with newer versions (>1.3) of terraform.

requested review from @atlurie

assigned to @ravi89

merged

mentioned in commit 20e2344b

mentioned in issue #1 (closed)

unassigned @ravi89