Tweak the tzdata format for future changes am: 4da0af149c am: 6672af7f23 am: a4a9ee7a64

Original change: https://android-review.googlesource.com/c/platform/system/timezone/+/1314835

Change-Id: I5840d6db772f4a3f3a22569452f6dad57dc7c4cc