Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56666
When clearing the SSO cookie use the same values for domain, path, httpOnly and secure as were used to set the SSO cookie.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1607594 13f79535-47bb-0310-9956-ffa450edef68