Append HoundCi fixes
https://github.com/twbs/bootstrap/pull/19639#discussion-diff-
57850395
https://github.com/twbs/bootstrap/pull/19639#discussion-diff-
57850397
https://github.com/twbs/bootstrap/pull/19639#discussion-diff-
57850398
https://github.com/twbs/bootstrap/pull/19639#discussion-diff-
57850401
https://github.com/twbs/bootstrap/pull/19639#discussion-diff-
57850399
https://github.com/twbs/bootstrap/pull/19639#discussion-diff-
57850402
https://github.com/twbs/bootstrap/pull/19639#discussion-diff-
57850403