Added whitelisted cloud provider names

app/bundles/storage.py

@@ -55,12 +55,19 @@ def get_storage() -> BundleStorageClient:
         logger.critical("Error: No CLOUD_PROVIDER ENV VAR SET")
         sys.exit(1)
 
+    allowed_values = ["aws", "gc", "az", "local", "ibm", "baremetal"]
+
     cloud_env = os.environ.get("CLOUD_PROVIDER")
-    try:
-        provider_module = _import_provider_specific_module(cloud_env)
-    except ModuleNotFoundError as exc:
-        logger.critical(f"Error occurred while importing module for {cloud_env}")
-        logger.critical(f"Exception: {exc}")
+
+    if cloud_env in allowed_values:
+        try:
+            provider_module = _import_provider_specific_module(cloud_env)
+        except ModuleNotFoundError as exc:
+            logger.critical(f"Error occurred while importing module for {cloud_env}")
+            logger.critical(f"Exception: {exc}")
+    else:
+        logger.critical("Error: specified CLOUD_PROVIDER wasn't in allowed list")
+        sys.exit(1)
 
     logger.info(f"get_storage provider for cloud_env {cloud_env}")
     return provider_module.storage_client()