wildfly-as 8.1.0

Closes #30168.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
wildfly-as: remove stray devel block
brew-test-bot: make test commands shell-safe
brew-test-bot: make git commands shell-safe
brew-test-bot: parse output of git-diff-tree
brew-test-bot: use path-limited diff
brew-test-bot: fix FormulaUnavailableError handling