CRI_XCBC playbooks clean up

cod.yaml
compute-build.yaml
headnode.yml
ohpc-build.yaml
ohpc-ops.yaml
ohpc.yaml
ood-build.yaml
ood-cod.yaml
ood-ops.yaml
ood-packer.yaml
ood.yaml
site-build.yaml
site-ops.yaml
site.yaml

We have created many playbooks for different types of deploy models over time. However, when we abandon one deploy model, we leave the playbooks in repo which makes the repo messy with lots of unused playbooks and/or roles.

It might be the time to clean this up.

added Backlog label

changed the description

The role ood_vnc_form seem to be unnecessary at this point.

This role, if I remember correctly, is specifically built for Cheaha, in order to run a single role to put update on Cheaha. And later on, added a fix regarding the text on the launch button being ambiguous.

The first part won't be an issue since we are building an image and lunch Chaha login node using the built image. The second part was already being addressed from upstream.

Therefore, I suggest removing this role and moving necessary changes into role ood.

Currently on Cheaha

On CoD with OOD 2.0 without ood_vnc_form

changed milestone to %CRI_XCBC repo clean up

@ravi89

mentioned in issue #419 (closed)

changed milestone to %Refactor the ansible codebase [CRI_XCBC](https://github.com/jprorama/CRI_XCBC)