Install Asterisk sounds

In addition to installing Asterisk itself, we want to install some sound
packages.  This includes a large set of prompts, as well as some music on
hold files.

Change-Id: I197079cb2398f97ae82abf38a18d5cb8c377b5bc

manifests/init.pp

@@ -36,4 +36,14 @@ class asterisk (
     ensure  => present,
     require => Yumrepo['asterisk11'],
   }
+
+  package { 'asterisk-sounds-moh-opsound-ulaw' :
+    ensure  => present,
+    require => Yumrepo['asteriskcurrent'],
+  }
+
+  package { 'asterisk-sounds-core-en-ulaw' :
+    ensure  => present,
+    require => Yumrepo['asteriskcurrent'],
+  }
 }