ENG-5660 resovle various issues with rpm packaging for v4.next
jenkins tools: clone jobs: support updating build settings for existing jobs
jenkins tools: vary slaves online/offline: update
Update template classpath to include groovy.
Also formatting changes a bit.
reverted two partition commit. resolved merge conflict in MpScheduler
Merge pull request #1060 from VoltDB/revert-two-partition-tx

reverted two partition commit. resolved merge conflict in MpScheduler
Merge pull request #1061 from VoltDB/ENG-5660-resolve-rpm-packaging-v4next

ENG-5660 resovle various issues with rpm packaging for v4.next
Merge branch 'master' into ENG-5664