odrefresh: Ignore some system properties.

Some power management component is changing dalvik.vm.dex2oat-threads at
runtime. Checking that system property causes odsign_e2e_tests to fail
because the values don't live across reboots.

Bug: 245440100
Test: See ignored system properties no longer exist in cache-info.xml
Change-Id: Ia0408a1f9492cb98576012da156af945178dae5e
2 files changed