extension/test/gopls/telemetry: allow more time for vscgo build

GH action on Windows is sometimes very slow.

Change-Id: Ie3e4403423439f41005245c163907b24f7ed7e4c
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/619778
Commit-Queue: Hyang-Ah Hana Kim <[email protected]>
kokoro-CI: kokoro <[email protected]>
Reviewed-by: Hongxiang Jiang <[email protected]>

Author: hyangah

extension/test/gopls/telemetry.test.ts

@@ -194,7 +194,7 @@ function testTelemetryPrompt(tc: testCase, wantPrompt: boolean) {
 }
 
 describe('# telemetry reporter using vscgo', async function () {
-	this.timeout(10000); // go install can be slow.
+	this.timeout(20000); // go install can be slow.
 	// installVSCGO expects
 	//   {extensionPath}/vscgo: vscgo source code for testing.
 	//   {extensionPath}/bin: where compiled vscgo will be stored.
@@ -218,6 +218,7 @@ describe('# telemetry reporter using vscgo', async function () {
 		} catch (e) {
 			assert.fail(`failed to install vscgo needed for testing: ${e}`);
 		}
+		console.log(`vscgo installed: ${vscgo}`);
 	});
 	suiteTeardown(() => {
 		rmdirRecursive(tmpDir);