qa/crimson: ignore PG_NOT_DEEP_SCRUBBED in all crimson tests
As we do not yet scrub scheduling in Crimson, the
OSDs do not perform deep scrubs. last_deep_scrub_stamp thus
stays at epoch 0 for all PGs. The monitor flags these as overdue
immediately, causing spurious test failures — particularly in tests
that restart OSDs (e.g. crimson_fio_restart), where PGs reaching
active+clean state trigger the health check.