[maven-release-plugin] copy for tag org.apache.felix.main-5.6.8

git-svn-id: https://svn.apache.org/repos/asf/felix/releases/org.apache.felix.main-5.6.8@1805693 13f79535-47bb-0310-9956-ffa450edef68
tree: ceaff2ae0b5848a6e361cd95e1aa19e7212207f1
  1. doc/
  2. src/
  3. pom.xml