Ignore .gradle directories that appear below the top-level directory (#11449)

Ignore .gradle directories that appear below the top-level directory

For example:

  dd-smoke-tests/springboot-freemarker/application/.gradle/
  dd-smoke-tests/springboot-velocity/application/.gradle/

Co-authored-by: devflow.devflow-routing-intake <devflow.devflow-routing-intake@kubernetes.us1.ddbuild.io>

Author: mcculls

.gitignore

@@ -8,7 +8,7 @@ target
 #########
 !**/gradle/wrapper/*
 /.gradle
-*/.gradle
+**/.gradle
 **/build/
 examples/**/build/