ENG-7153 Added interfaces/ports to SystemInformation
ENG-7274: Eliminate the deprecated 'groups' attribute in the user
element in the deployment file.
- Clean up some code that merged both
- Clean up a bunch of other code that used 'group' instead of 'role',
mostly in test code.
- Remove redundant code from RealVoltDB and clean up
remove-compiler-banner
Merge pull request #1868 from VoltDB/eng7274

ENG-7274, r=jhugg
Merge pull request #1871 from VoltDB/remove-compiler-banner

remove-compiler-banner
Merge pull request #1864 from VoltDB/ENG-7153

ENG-7153 Added interfaces/ports to SystemInformation
Merge pull request #1872 from VoltDB/master

another backmerge TO TestStatisticsFlakes