HTTPASYNC-84: OSGi module missing import for org.apache.http.conn.util
Contributed by Stefan Seifert <sseifert at pro-vision.de>

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpasyncclient/trunk@1637316 13f79535-47bb-0310-9956-ffa450edef68