Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/@grpc/grpc-js/build/src/admin.d.ts

@@ -0,0 +1,11 @@
+import { ServiceDefinition } from './make-client';
+import { Server, UntypedServiceImplementation } from './server';
+interface GetServiceDefinition {
+    (): ServiceDefinition;
+}
+interface GetHandlers {
+    (): UntypedServiceImplementation;
+}
+export declare function registerAdminService(getServiceDefinition: GetServiceDefinition, getHandlers: GetHandlers): void;
+export declare function addAdminServicesToServer(server: Server): void;
+export {};