OZG-3328 new helm unittest framework

src/test/helm/api-password-secret_test.yaml

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

...test/helm/deployment-mongodb-passwort-secretref-test.yaml

src/test/helm/deployment-test.yaml

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

...test/helm/deployment_container_security_context_test.yaml

src/test/helm/deployment_defaults_labels_test.yaml

src/test/helm/deployment_env_test.yaml

src/test/helm/network_policy_test.yaml