Make WrappedTransform work with --class-log-level (#1640)

Change WrappedTransforms to be sensitive to the --class-log-level of
their true underlying transform. In effect, information logged in a
wrapper (like timing information) will now print as expected.

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
(cherry picked from commit 01919d31)