Goal: 

• Modify the metric-storage controller, so that serviceLabels variable isn't a package level variable anymore.
• All metric storage controller functions need to pass the serviceLabels variable appropriately.
• serviceLabels variables in other controllers are moved in the code to places, which ensures the other controllers continue working and that they use correct labels
• Modify kuttl-tests for checking service label of created resources where possible

Acceptance Criteria:

• All previously discovered issues are fixed:
  • ceilometer pod uses service: ceilometer in it's labelSelector for topology
  • LokiStack created by the cloudkitty controller uses a service: cloudkitty label
• PR(s) pass the CI