Merge "Allow rebuild sepolicy even though the image does not exist." am: 1d35f905 am: df1cdb8f

Original change: https://android-review.googlesource.com/c/platform/build/+/2452627



Change-Id: I9acd7ad5945cb0cc07eb50cd7aedbf4a41e4588b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>