OZG-4923-keycloak operator imagePullSecret aus Namespace nutzen

ozgcloud-keycloak-operator/run_helm_test.sh

...ud-keycloak-operator/src/main/helm/templates/_helpers.tpl

...keycloak-operator/src/main/helm/templates/deployment.yaml

...k-operator/src/main/helm/templates/image_pull_secret.yaml

...-keycloak-operator/src/test/helm/deployment_env_test.yaml

...k-operator/src/test/helm/deployment_matchlabels_test.yaml

...erator/src/test/helm/deployment_metadata_labels_test.yaml

...k-operator/src/test/helm/deployment_pull_secret_test.yaml

...oak-operator/src/test/helm/deployment_resources_test.yaml

...loud-keycloak-operator/src/test/helm/deployment_test.yaml

...ycloak-operator/src/test/helm/image_pull_secret_test.yaml

ozgcloud-keycloak-operator/src/test/helm/linter_values.yaml