Added etherpadlite module and system user

etherpadlite/manifests/init.pp

@@ -0,0 +1,16 @@
+# Install etherpad-lite.
+#
+class etherpadlite {
+
+    include user::system
+    realize(User["etherpad"], Group["etherpad"])
+
+    file { "/var/lib/etherpad":
+        ensure  => "directory",
+        mode    => "0700",
+        owner   => "etherpad",
+        group   => "etherpad",
+        require => User["etherpad"],
+    }
+
+}