Alanren/integration test (#3657)

* add an extension for integration tests

* setup ads before running test

* test setup

* test cases

* bash script

* shorter temp folder name

* code cleanup

* add commented out original code

* fix test error

* test result path

* rename results file

* change file path

* report smoke test results

* test stablize

* test stablization and configurable test servers

* fix smoke test error

* connection provider

* simplify the integration test script

* add comment

* fix tslint error

* address PR comments

* add temp log to check whether the environment variable is already set

* remove temp log

* move api definition to testapi typing file

* exclude integration tests extension

* address comments

src/sql/sqlops.test.d.ts

@@ -0,0 +1,23 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+// This is the place for APIs used for testing
+
+import * as core from 'sqlops';
+import * as vscode from 'vscode';
+
+declare module 'sqlops' {
+
+	export namespace extensions {
+		export function install(vsixPath: string): Thenable<string>;
+	}
+
+	export namespace objectexplorer {
+		/**
+		 * get object explorer node context menu actions
+		 */
+		export function getNodeActions(connectionId: string, nodePath: string): Thenable<string[]>;
+	}
+}