Support installing/connecting to agent in DeploymentConfig workloads

[sichapman]

As far as I can tell, Telepresence 2 combined with Openshift (4.7) seems to work fine with Deployments and StatefulSets but some of our pods are held in DeploymentConfigs, which do not appear in telepresence list as interceptable and telepresence intercept gives a not found error.

If I use the mutator webhook I can get the agent installed into the pod, but that still doesn't help connecting to it from the client side.

[edeandrea]

+1 to this.

[github-actions]

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