Merge "IsEnvTrue and IsEnvFalse should take `True` and `False` as valid values...

Merge "IsEnvTrue and IsEnvFalse should take `True` and `False` as valid values respectively." into main am: c9b4d4c5

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3070703



Change-Id: I71a0c74e961171b74dc3870aed6428f60b38ff18
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>