Print controller version as part of kubectl kudo version

[nfnt]

What would you like to be added:
Currently, kubectl kudo version only prints the current version of the KUDO CLI. It should also print the version of the KUDO controller if the controller is running.

Why is this needed:
Controller and CLI might differ and this could cause issues because backwards-compatibility can't be guaranteed in all cases. Printing the controller version will help detect the cause.

[sivaramsk]

@nfnt - does printing the version of kudo-controller container would do here? or I can get this information anyother way?

[nfnt]

Yes, that should be enough. Through the Kubernetes API we could check if the KUDO controller pod is running and which version of the image is deployed.

[sivaramsk]

@nfnt - does the below output looks ok to you

KUDO Version: version.Info{GitVersion:"0.11.1", GitCommit:"11985828", BuildDate:"2020-04-02T16:49:35Z", GoVersion:"go1.13.1", Compiler:"gc", Platform:"darwin/amd64"}
KUDO Controller Version: kudobuilder/controller:v0.11.1

Let me know if you have any suggestions to the output.