Fixed "unquoted file mode" errors given by puppet-lint.

time/manifests/init.pp

@@ -17,7 +17,7 @@ class time::server {
 class time::zone {
     file { "/etc/localtime":
         ensure => present,
-        mode   => 0644,
+        mode   => "0644",
         source => "/usr/share/zoneinfo/$timezone_set"
     }
 
@@ -25,14 +25,14 @@ class time::zone {
         centos,redhat: {
             file { "/etc/sysconfig/clock":
                 ensure  => present,
-                mode    => 0644,
+                mode    => "0644",
                 content => template("time/sysconfig_clock.erb"),
             }
         }
         ubuntu: {
             file { "/etc/timezone":
                 ensure  => present,
-                mode    => 0644,
+                mode    => "0644",
                 content => "$timezone_set\n",
             }
         }