OZG-4183 OZG-4584 adopt helm chart values

src/main/helm/templates/_helpers.tpl

src/main/helm/templates/api-password-secret.yaml

src/main/helm/templates/deployment.yaml

src/main/helm/templates/ingress.yaml

src/main/helm/values.yaml

src/test/helm/deployment-keycloak-values-test.yaml

src/test/helm/deployment-url-value-test.yaml

...est/helm/ozg_operator_secrets_read_role_binding_test.yaml

src/test/helm/ozg_operator_secrets_read_role_test.yaml

...st/helm/ozg_operator_secrets_write_role_binding_test.yaml

src/test/helm/ozg_operator_secrets_write_role_test.yaml

src/test/unit-values.yaml