Retry: Fix snapshot of a host/device cc_library with stubs

Change since last attempt: Disable test that breaks on darwin.

Adds a test that fails with unknown property android.stubs.versions
and then fixes that by marking the field from which that property is
created with 'ignored-on-host' and implemented the isHostVariant on
*osTypeSpecificInfo.

Bug: 155628860
Test: m nothing
Change-Id: Ia4e744c9e799d5adaf8a2f761516f568ec363ad4