Unrevert instrumentation for Bitbucket Server ACLs
Created by: keegancsmith
We add back this PR, but exclude the changes to nginx.conf.
Revert "Revert "authz: Instrument Bitbucket Server ACLs code paths with tracing (#4642)" (#4678)"
This reverts commit 511fe1eabfacf5bf57aba7ca69ddc297841e6485.