feat(service): add part-of, instance selector labels and appProtocol

[andrewazores]

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Fixes: #
See cryostatio/cryostat-helm#211
Related to cryostatio/cryostat-openshift-console-plugin#2

Description of the change:

This change adds allows the users to provide...

Motivation for the change:

This change is helpful because users may want to...

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[andrewazores]

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[andrewazores]

This PR + cryostatio/cryostat-openshift-console-plugin#2 leads to this situation. The Cryostat Service is correctly identified, but the Agent proxy service is, too. That proxy has the same component: cryostat label on it - @ebaron does anything depend on that as a selector at this point, or can we change it?

[andrewazores]

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[ebaron]

If I'm reading this correctly, none of the selector labels have changed, so we shouldn't run into any immutable field errors upon upgrade.

[ebaron]

@ebaron does anything depend on that as a selector at this point, or can we change it?

Nothing relies on this, so renaming should be fine.

[andrewazores]

I wonder if I can still do this -

[andrewazores]

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