List config files on failure

src/freedombone-app-xmpp

     if [ ! "$?" = "0" ]; then
         echo ''
         echo ''
+        which prosody
+        which prosodyctl
+        echo ''
+        echo ''
         cat /etc/prosody/prosody.cfg.lua
-        remove_xmpp
         echo ''
         echo ''
+        cat /etc/prosody/conf.avail/xmpp.cfg.lua
+        echo ''
+        echo ''
+        remove_xmpp
         echo $'Unable to register prosody user'
         exit 347682
     fi