[automerger skipped] Build OTA when boot image exists even without kernel or...

[automerger skipped] Build OTA when boot image exists even without kernel or recovery fstab am: 73f01711 am: 7f3996b6 -s ours

am skip reason: Merged-In I4e5adc3f42a516ac0e2f66c313dbe34a469ebe05 with SHA-1 ff2e24d6 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/15289191

Change-Id: I0f1b9f0141943a1b6c84102bf8c2e015adcc2080