strip comment lines off iscsi node data

Now checks like foo.empty? on the map make more sense.

src/modules/IscsiClientLib.rb

@@ -220,7 +220,7 @@ def nodeInfoToMap(stdout)
         key, val = row.split("=")
 
         key = key.to_s.strip
-        retval[key] = val.to_s.strip if !key.empty?
+        retval[key] = val.to_s.strip if !key.empty? && !key.match?(/^#/)
       end
 
       retval