Add mainline skipping to CVE-2020-0451 am: 6326590f62

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/13242479

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I476e059f40c3db81e52b0c33d6c297c62d6974dc