Added bug php-memcached-dev#155 test to package.xml

Author: mkoppanen

package.xml

@@ -134,6 +134,7 @@ http://pear.php.net/dtd/package-2.0.xsd">
     <file role='test' name='config.inc'/>
     <file role='test' name='sasl_basic.phpt'/>
     <file role='test' name='getserverbykey.phpt'/>
+    <file role='test' name='gh_155.phpt'/>
   </dir>
  </dir>
  </contents>