updates for mariadb connector 1.0.10

updates for mariadb connector 1.0.10

Fixed regression in mariadbconnector dialect as of mariadb connector 1.0.10
where the DBAPI no longer pre-buffers cursor.lastrowid. The dialect now
fetches this value proactively for situations where it applies.

test_invalidate_on_results seems to pass for mariadbconnector now.
the driver has likely changed how it buffers result sets.  This is
a major change for them to make in a point release so we might
want to watch this in case they reverse course again.

Fixes: #7738
Change-Id: I9610aae01d1ae42fa92ffbc7123a6948e40ec9dd