Refactor ZoneInfoTest to use java.time types

ZoneInfoTest uses a lot of durations / times in seconds and
milliseconds. Switching to java.time types makes it easier to read /
detect trivial type errors / maintain.

Bug: 118835133
Test: atest CtsLibcoreTestCases:libcore.libcore.util.ZoneInfoTest
Change-Id: I5efedc5be3a600d0373e058948f789398ef6efc1
1 file changed