ENG-7019: Fix race condition in stream snapshot watchdog thread.

Ideally, m_outstandingWorkCount should be removed and m_outstandingWork can use
a LinkedBlockingQueue. This fix introduces less changes to lower the risk.
ENG-7019: Safe guard stream snapshot watchdog with try/finally so that it still
reschedules itself even if an exception is thrown.

Failed stream snapshot relies on the watchdog to terminate the
snapshot. Otherwise, it will block all subsequent snapshots.
Query timeout UI work
ENG-7050: Use enumset without the spec changes.
ENG-7050: move to single hasPermission model.
Merge pull request #1726 from VoltDB/ENG-7050

ENG-7050: Use enumset without the spec changes.
Add some instructions to vmware image maker.
ENG-7058: Remove auth rate-limit from the HTTP JSON interface.
Refactor the naming part to make it more consistent
Merge pull request #1729 from VoltDB/ENG-7058

ENG-7058: Remove auth rate-limit from the HTTP JSON interface.

r=akhanzode
refactor the naming, be consistent with the UI on deployment file
Merge branch 'master' of github.com:VoltDB/voltdb into ENG-6999-timeout-UI
Merge pull request #1730 from VoltDB/release-4.8.x

Release 4.8.x
change the source instead the copied one
Merge pull request #1724 from VoltDB/ENG-6999-timeout-UI

Query timeout UI work
ENG-7069 - Fix documentation and forum URLs in README.
Update README
ENG-7069 morfe edits to README.
Merge branch 'master' of github.com:VoltDB/voltdb