for example an exception object made within a test suite can
still repr (error seen in Keystone)

INSERT, UPDATE, and DELETE statements to both specify their own
WITH clause, as well as for these statements themselves to be
CTE expressions when they include a RETURNING clause.
fixes #2551

because we never log in on the ts1/ts2.  races against other runs
and erases their DBs

yet cx_Oracle still has open sessions that cannot be killed until process dies.
Oracle wins!   Add a completely separate DB reaper script that runs
after py.test is done.