rescue on parallel sis import
rescue on parallel sis import

if the sis import fails to find the sis_batch on
update progress it will continue and update the
progress on next run.

fixes CNVS-34250

test plan
 - run a sis import
 - it should run

Change-Id: Ie4541b250f375bcb5fedfa6a1ab9afee15233169
Reviewed-on: https://gerrit.instructure.com/99230
Tested-by: Jenkins
Reviewed-by: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
Product-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
QA-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>

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