Fix fetch-web-ext-lint's web-ext-lint.txt existence check

Bug: misc:9
Change-Id: Id4ac97e0e95cbbb54673d8b1142927d398347c3b
1 file changed
tree: 8f3abe1fa56498ee7a3f3ac118374740edae60c7
  1. playbooks/
  2. roles/
  3. zuul.d/