add annotation

Signed-off-by: Lin Moskovitch <[email protected]>

Author: linmosko

test/e2e/tests/envoy_shutdown.go

@@ -3,6 +3,8 @@
 // The full text of the Apache license is available in the LICENSE file at
 // the root of the repo.
 
+//go:build e2e
+
 package tests
 
 import (