Add negregex constraint type for not allowing values based on a regex.

3 jobs for its9442 in 34 minutes and 1 second (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build-gnutls-mit-standalone-lloadd #3006

00:29:44

passed build-no-threads-no-slapd #3004

00:03:58

passed build-openssl-heimdal-lloadd #3005

00:32:51