Fix cleanup error in ci tests

ci_tests/cleanup_basic_grb_test.sh

@@ -18,7 +18,7 @@ check_and_uninstall() {
         return
     fi
     debug "Uninstalling ${release_name}"
-    helm uninstall -n "${ns}" "${release_name}" | error "Could not uninstall chart $release_name"
+    helm uninstall -n "${ns}" "${release_name}" || error "Could not uninstall chart $release_name"
 }
 
 ns=$(./helpers/get_namespace.sh)