Add run-test-aum-rollback-bootcount.sh

This is to simplify the execution of the test aum-rollback-bootcount. Instead of using manual commands, we can simply use this script.

Signed-off-by: Dylan Aïssi dylan.aissi@collabora.com

requested review from @wlozano

assigned to @daissi

mentioned in issue infrastructure/apertis-issues#695

merged