ENG-5316 Handle Dummy catalog.
ENG-5316 javadoc update.
ENG-5338 fix. add log to dump export configuration.
ENG-5316 dont do export checking if dummy catalog.
Merge branch 'master' into ENG-5316
Merge branch 'master' into ENG-5316
Merge branch 'ENG-5316' of https://github.com/VoltDB/voltdb into ENG-5316
ENG-5316 review changes.
Merge branch 'master' into ENG-5316
ENG-5316 make dummy isPlaceHolderCatalog
Merge pull request #916 from VoltDB/ENG-5316

Eng 5316