Problem:
The cardinality value returned by InnoDB is not always latest.
InnoDB does not guarantee latest value, unless user execute ANALYZE TABLE
command. So, the test main.information_schema_part would fail sporadically
on different system load.

Fix: Update the test case to expect non-zero cardinality value, instead of
latest value.

Change-Id: Ib8689834e10491e81d734313035e05a022e22a12