v1.27.2 — Hotfix: restores admin hook scripts, which 1.27.1 silently d

Hotfix: restores admin hook scripts, which 1.27.1 silently disabled. 1.27.1 repointed the hook sudoers grant out of /tmp but left three callers creating their script there, so the sudo invocation no longer matched and every add_domain/delete_domain hook failed to run. Fails closed, so there is no security impact, and installs with no hook script enabled are unaffected. Upgrade immediately if you use hook scripts.