Release v0.16.0

Changes included in v0.16.0:

🚀 Features

• release v0.16.0 #190
  • [USER][FEATURE] - Release v0.16.0
• prepare for high availability #188
  • [OPERATOR][FEATURE] Add high availability features for the openmcp-operator and service-providers, cluster-providers and platform-services
• exclude provider fields from status update & utility to set these fields #187
  • [DEVELOPER][FEATURE] - Utility function for service providers to add the kinds of their managed resources to the ServiceProvider status

🔧 Chores

• remove namespace field from secret reference in AccessRequest status #183
  • [USER][BREAKING] Removed the status.secretRef.namespace field from AccessRequest resources which was added by accident. The access secrets are expected to be in the same namespace as the AccessRequest itself, so wherever this field is read, it can just be replaced with the AccessRequest's namespace.
• improve the advanced clusteraccess library's abilities to mock fake clients in unit tests #186
  • [DEVELOPER][FEATURE] The advanced ClusterAccess library's capabilities regarding unit tests have been enhanced by adding a configurable FakeClientGenerator to the reconciler. If set, this function will be called when trying to build a client.Client out of an AccessRequest's kubeconfig secret. This enables the test code to inject fake client implementations into the reconciler's Access method and thereby removes the need for any test-specific coding in the controller's logic itself.