Add Kata runtime class property to workload details pages

We should show the runtime class on workloads pages and add a badge to the heading in the case a workload uses Kata. A workload uses Kata if its pod template has `runtimeClassName` set to `kata`.

Acceptance Criteria:

• Kata runtime must be viewable when checking running workloads, including Pods, ReplicaSets, ReplicationControllers, StatefulSets, Deployments, and DeploymentConfigs.
• Automated test must be written to verify coverage

aronaldson indicated that adding a "kata" badge in the heading would be too much noise around other heading badges (ContainerCreating, Failed, etc).