ntp: Disable systemd-timesyncd on RHEL 8

manifests/ntp.pp

@@ -38,6 +38,14 @@ class base::ntp {
           },
           notify => Service['ntpd'],
       }
+      # On RHEL 8, we expect that systemd-timesync will be present, and not 
+      # masked by NTP's installation.  So, disbale the service.
+      if ( $::lsbmajdistrelease == 8 ) {
+        service { 'systemd-timesyncd':
+          ensure => stopped,
+          enable => false,
+        }
+      }
     }
     'Debian': {
       package { 'ntpdate': ensure => present }