OZG-4624 rename helm image

doc/examples/client-alfa.yaml

doc/examples/realm-berlin.yaml

doc/examples/user-helge.yaml

run-local.sh

src/main/helm/Chart.yaml

src/main/helm/templates/deployment.yaml

src/test/helm/deployment_matchlabels_test.yaml

src/test/helm/deployment_metadata_labels_test.yaml

src/test/helm/deployment_pull_secret_test.yaml

src/test/helm/rbacs/keycloak_admin_secret_read.yaml

src/test/helm/rbacs/keycloak_read_test.yaml

src/test/helm/rbacs/keycloak_write_test.yaml

src/test/helm/rbacs/serviceaccount_test.yaml