ENG-4633: Lingering non-blocking issues.  Provide the index and table
schemas in java so that we can generate correct empty tables for them
if statistics is polled before the EE stats tick populates them for
real.  This issue would also occur if there were no tables or indexes
in the schema, so we can add a test for the fix to that suite.
ENG-4633: Another intermittent test failure due to non-blocking stats
changes.  This should fix it.
Merge pull request #520 from VoltDB/eng4633-ugh

Eng4633