Merge "Build vendor images first when rebuilding with vendor_otatools." am:...

Merge "Build vendor images first when rebuilding with vendor_otatools." am: a529e0fd am: 4495b649 am: adbf8de8 am: 9fb65dcb

Original change: https://android-review.googlesource.com/c/platform/build/+/1826615

Change-Id: Ic2ae9944b9cf839835d8d1619080b040555ba77e