cloud test fixes

Author: HotSushi

integration-tests/src/main/java/org/apache/polaris/service/it/test/PolarisRestCatalogIntegrationBase.java

@@ -221,7 +221,9 @@ public void before(TestInfo testInfo) {
     StorageConfigInfo storageConfig = getStorageConfigInfo();
     URI testRuntimeURI = URI.create(storageConfig.getAllowedLocations().getFirst());
     catalogBaseLocation = testRuntimeURI + "/" + CATALOG_LOCATION_SUBPATH;
-    externalCatalogBase = URI.create(testRuntimeURI + "/" + EXTERNAL_CATALOG_LOCATION_SUBPATH);
+    externalCatalogBase =
+        URI.create(
+            testRuntimeURI + "/" + EXTERNAL_CATALOG_LOCATION_SUBPATH + "/" + method.getName());
 
     Optional<CatalogConfig> catalogConfig =
         Optional.ofNullable(method.getAnnotation(CatalogConfig.class));