Flaky Test Fix: TestSink [VAULT-720] (#10086)

* fixed

* test sink fix

* remove print statements used for debugging

* remove print statements used for debugging

Co-authored-by: HridoyRoy <hridoyroy@Hridoys-MacBook-Pro.local>
Co-authored-by: HridoyRoy <hridoyroy@Hridoys-MBP.hitronhub.home>

command/agent/sink/file/sink_test.go

@@ -48,10 +48,11 @@ func TestSinkServer(t *testing.T) {
 	defer timer.Stop()
 
 	select {
-	case <-ctx.Done():
 	case err := <-errCh:
+		if err != nil {
 			t.Fatal(err)
 		}
+	}
 
 	for _, path := range []string{path1, path2} {
 		fileBytes, err := ioutil.ReadFile(fmt.Sprintf("%s/token", path))