Refactor component feature and version labels

[chrismuellner]

Description

The components (activegate and oneagent) managed by the operator should have their version included in the labels.

Following labels/annotations were changed:

• Set app.kubernetes.io/name to oneagent or activegate
• Set app.kubernetes.io/version to oneagent or activegate version
• Replaced component.dynatrace.com/feature with app.kubernetes.io/component for the oneagent mode or activegate capability
• Removed version annotation on activegate/oneagent pods

How can this be tested?

Deploy a dynakube with any oneagent mode and any activegate capability enabled.

Expected labels after this change:

• oneagent:

  labels:
    app.kubernetes.io/name: oneagent
    app.kubernetes.io/component: cloudnativefullstack
    app.kubernetes.io/version: 1.241.0.20220413-171953
    app.kubernetes.io/created-by: dynakube
    app.kubernetes.io/managed-by: dynatrace-operator
    

  selector:
    matchLabels:
      app.kubernetes.io/name: oneagent
      app.kubernetes.io/created-by: dynakube
      app.kubernetes.io/managedy-by: dynatrace-operator
      

• activegate:

  labels:
    app.kubernetes.io/name: activegate
    app.kubernetes.io/component: activegate
    app.kubernetes.io/version: 1.241.0.20220414-004007
    app.kubernetes.io/created-by: dynakube
    app.kubernetes.io/managed-by: dynatrace-operator
    

  selector:
    matchLabels:
      app.kubernetes.io/name: activegate
      app.kubernetes.io/created-by: dynakube
      app.kubernetes.io/managedy-by: dynatrace-operator
      

• other resources (e.g. secret) that are connected to oneagent/activegate but shouldn't change between versions

labels:
    app.kubernetes.io/component: activegate
    app.kubernetes.io/created-by: dynakube
    app.kubernetes.io/name: dynatrace-operator
    

Checklist

• Unit tests have been updated/added
• PR is labeled accordingly

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