FELIX-3902 test for SingleDynamic config change problem

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1446432 13f79535-47bb-0310-9956-ffa450edef68
FELIX-3902 fix SingleDynamic config change problem

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1446433 13f79535-47bb-0310-9956-ffa450edef68