1173139: Make responses include the req uuid again

LoggingFilter wasn't getting passed it's config when
created, so the 'header.name' config item was never
found so the 'x-candlepin-request-uuid' was not
populated in the http response.
Merge pull request #796 from candlepin/alikins/1173139_requestuuid

1173139: Make responses include the req uuid again