Add logs why TestISOFunctions is skipped am: 271a850fa6 am: c742be72bc am: bf3b02b93a am: cd7315f0a7 am: f77e4201d3

Original change: https://android-review.googlesource.com/c/platform/external/icu/+/2646921

Change-Id: I463db62168ae4b45ac384a66a1e11b2112c1dce2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>