This includes a few transform changes to set default values for new required
parameters and marked certain 8601 dates as strings when they use more precision
that Python's dates.

I'm seeing a few test failures that I'm hoping someone on the Python side can
investigate (mostly "The specified share is being deleted. Try operation later."
that I was seeing before my changes).  There are a few other failures related to
new service features that we can fix if easy or disable and file a work item to
get these changes in.  The recorded tests will also have to be updated, but we
don't need to block on that right now.