FELIX-4074 :  Plugin class name changed for config manager plugin, might be disabled on update 

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1486066 13f79535-47bb-0310-9956-ffa450edef68
Update changelog

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1486067 13f79535-47bb-0310-9956-ffa450edef68