use NO KEY UPDATE lock on postgres 9.3 for sis progress updates
use NO KEY UPDATE lock on postgres 9.3 for sis progress updates

Change-Id: Idcd3eaffcdac3e11a54ba6f172ce55b4c27b9737
Reviewed-on: https://gerrit.instructure.com/39287
Reviewed-by: Zach Wily <9de8c4480303b5335cd2a33eefe814615ba3612a@instructure.com>
Reviewed-by: Brian Palmer <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Product-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
QA-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>

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