• Fix trigger registration when using st2-register-content script with --register-triggers
  flag. (bug-fix)
• Fix an issue with CronTimer sometimes not firing due to TriggerInstance creation failure.
  (bug-fix)
  Reported by Cody A. Ray
• Add support for default values when a new pack configuration is used. Now if a default value
  is specified for a required config item in the config schema and a value for that item is not
  provided in the config, default value from config schema is used. (improvement)
• Allow user to prevent execution parameter merging when re-running an execution by passing
  ?no_merge=true query parameter to the execution re-run API endpoint. (improvement)
• Support for posixGroup in the enterprise LDAP authentication backend