Switch to current snapshot for scr generator

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1576659 13f79535-47bb-0310-9956-ffa450edef68
Use latest versions for scr generator and scr annotations

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1576660 13f79535-47bb-0310-9956-ffa450edef68