(maint) use opts as options hash
Add ntp_server type
Add ntp_config type
(NETDEV-8) Add syslog_settings type
(maint) Refactor numeric parameter to use opts hash

In an effort to be more readable inside the example specs.
(NETDEV-9) Add syslog_server type
(NETDEV-5) Add name_server type
(NETDEV-6) Add domain_name type
(NETDEV-7) Add search_domain type
Merge branch 'dns'

* dns:
  (NETDEV-7) Add search_domain type
  (NETDEV-6) Add domain_name type
  (NETDEV-5) Add name_server type
  (NETDEV-9) Add syslog_server type
  (maint) Refactor numeric parameter to use opts hash
  (NETDEV-8) Add syslog_settings type
  Add ntp_config type
  Add ntp_server type
  (maint) use opts as options hash