GF-61238, GF-61239 :moon.Clock and moon.TimePicker occur error when local info is thaisolar.
Fix the issue using ilib method(ilib.Date.ThaiSolarDate)
Switching Clock and TimePicker to use the factory method ilib.Date.newInstance() instead of a locale specific calendar/date object.
Corrected the UTC timezone to its more accurate representation Etc/UTC.
Enyo-DCO-1.1-Signed-off-by: Blake Stephens <blake.stephens@lge.com>
Merge pull request #1141 from enyojs/GF-61238-Sungbae_Cho-RC

GF-61238, GF-61239 fix error when locale is Thai -RC