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/workbench/api/node/extHostModelViewDialog.ts

@@ -105,7 +105,7 @@ class ModelViewEditorImpl extends ModelViewPanelImpl implements sqlops.workspace
 		this._proxy.$setDirty(this.handle, value);
 	}
 
-	registerSaveHandler(handler: () => Thenable<boolean>) {
+	registerSaveHandler(handler: () => Thenable<boolean>): void {
 		this._saveHandler = handler;
 	}
 
@@ -515,7 +515,7 @@ export class ExtHostModelViewDialog implements ExtHostModelViewDialogShape {
 		let handle = this.getHandle(dialog);
 		this.updateDialogContent(dialog);
 		dialog.dialogName ? this._proxy.$openDialog(handle, dialog.dialogName) :
-						   this._proxy.$openDialog(handle);
+			this._proxy.$openDialog(handle);
 	}
 
 	public closeDialog(dialog: sqlops.window.modelviewdialog.Dialog): void {