Fix UUID search with hyphens

Prometheus metrics

Add ACL Bootstrap CLI

Fix restoration of stopped periodic jobs

sync acls

This PR fixes:
* UUID lookup with hyphens and odd length. The math was wrong. There is
now a test that ranges over all possible values.
* Fixes an unreported issue that could be hit when a job has more than 4
hyphens in it as UUID lookup doesn't allow that.

Fixes https://github.com/hashicorp/nomad/issues/3141

This PR fixes an issue in which we would add a stopped periodic job to
the periodic launcher.

Update the ACL guide description

Now it's about ACLs instead of outage recovery.

Fix permissions of $GOPATH in Vagrantfile

Vendor blake2b to allow for building on x386 architecture

Technically just the true->false is needed. The `chown -R` was a first
attempt that didn't fix the bug, but it's a nice simplification.

Fix panic in emitting tagged allocation metrics

Add ability to reset ACL bootstrap process

Hide non-user commands from autocomplete output