Add build files for pyyaml am: 5d1ef15144 am: 32247b84ab am: 3fb2992ea8 am: f0d7447221

Original change: https://android-review.googlesource.com/c/platform/external/python/pyyaml/+/2111745

Change-Id: Iaef48bd673dc8e108bbbce4432993314bd3c8fe5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>