* ud-generate: update gitolite authkeys generation
- skip ssh keys with non-local allowed_hosts
- skip all keys with other restrictions
- make including keys for hosts optional (on by default)
- support overriding the command we restrict to
* ud-generate: update gitolite authkeys generation
- skip ssh keys with non-local allowed_hosts
- skip all keys with other restrictions
- make including keys for hosts optional (on by default)
- support overriding the command we restrict to