(MODULES-6363) fix disabling dhclient on redhat-derivatives

manifests/config.pp

@@ -94,5 +94,10 @@
     file { '/var/lib/ntp/ntp.conf.dhcp':
       ensure => absent,
     }
+
+    #remove dhclient ntp script which modifies ntp.conf on RHEL and Amazon Linux
+    file { '/etc/dhcp/dhclient.d/ntp.sh':
+      ensure => absent,
+    }
   }
 }

spec/classes/ntp_spec.rb

@@ -233,6 +233,9 @@
             it 'contains dhcp file' do
               is_expected.to contain_file('/var/lib/ntp/ntp.conf.dhcp').with_ensure('absent')
             end
+            it 'contains ntp.sh file' do
+              is_expected.to contain_file('/etc/dhcp/dhclient.d/ntp.sh').with_ensure('absent')
+            end
           end
           context 'when set to false' do
             let(:params) do