Fix failing test by increasing the time to wait for the socket to close.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1566689 13f79535-47bb-0310-9956-ffa450edef68
Correct the comment

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1566692 13f79535-47bb-0310-9956-ffa450edef68