turnitin: increase check status attempts

closes CNVS-16212

Change-Id: I33a12b1e13b47fa981f12fd80fb516da8d69c918
Reviewed-on: https://gerrit.instructure.com/45554
Reviewed-by: Josh Simpson <jsimpson@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Josh Simpson <jsimpson@instructure.com>
Product-Review: Josh Simpson <jsimpson@instructure.com>