WHAT
We currently use the hive managed label to determine an addon install but this label might be used elsewhere by some other service for some manipulation.

This label should be updated to our own for determining an addon install instead of using the hive managed label

[1] https://github.com/integr8ly/integreatly-operator/blob/4d5f7bf06abc5f957ae853f95d60942b2cd251c0/pkg/addon/operator_run.go#L19
[2] https://gitlab.cee.redhat.com/service/managed-tenants/-/blob/main/addons/rhoams/metadata/stage/addon.yaml#L236

Thread: https://chat.google.com/room/AAAAssKWhTI/PsmnX3GIBX4

HOW

• Update label in integreatly operator to use our own label
  • https://github.com/integr8ly/integreatly-operator/search?q=hive.openshift.io
• Update managed tenents to apply our own label

TESTS
<List of related tests>

DONE

• RHOAM using own custom label for determing addon install