Show actual Pod name on Deploy Boards

Today, Deploy Boards shows the summary state of a deployment. It knows for example that a given deployment has 8 running pods, 1 actively deploying, and 1 pod that has not yet started.

However we don't actually retrieve from Kubernetes the actual list of pods for a given deployment. This is why for example we show the name of the pods as Pod 0 or Pod 1 instead of their actual names.

We should enhance this logic to retrieve the actual list of pods for a given deployment, and show the actual pod name instead of the simple pod number.

This has two benefits:

1. If you are trying to use something like kubectl to get more information on the pod, you now have the actual Pod ID to look up directly. (e.g. kubectl describe pod xxx)
2. Once we know the actual Pod ID, we can provide a really smooth entry point to Pod Logs (https://gitlab.com/gitlab-org/gitlab-ee/issues/4752).

Proposal

• Enhance deploy boards to show the actual pod name on hover, in addition to the status we show today.
• Allow users to click on the pod, and get taken to the upcoming pod logs view (https://gitlab.com/gitlab-org/gitlab-ee/issues/4752) for that pod.

This would also lay the ground work for future features like: https://gitlab.com/gitlab-org/gitlab-ee/issues/2413

Design

• The tooltip shows up when the pod box is on hover.
• Then, the style of pod box will change to:
• Background color --> #75D09B
• Border color --> #1AAA55