release: 2.8.1-01
update to next version: 2.8.1-SNAPSHOT
[NEXUS-6611] Rebuild yum test rpms with > 1 files and includes specs for reference
set default jmx-host value in jetty-jmx.xml

defaulting jmx-host to 0.0.0.0 because nobody reads the doc.
Merge remote-tracking branch 'origin/nexus-2.8.x' into NEXUS-6568-csrf-protection-28x