Add hint data for whether a country uses UTC

Most country codes do not use UTC and working that out
on the fly on device is inefficient: some of the
countries that don't use UTC have many zone that need
to be loaded and checked (e.g. US, RU, CA, BR). This
hint allows that to be side-stepped. Most of the zones
that do use UTC only have a small number of time
zones to check on device.

The data will be used in a future commit to support
telephony time zone detection usecases.

For reference the country codes that use UTC ever are:

aq, bf, ci, eh, es, fo, gb, gg, gh, gl, gm, gn, gw, ie,
im, is, je, lr, ma, ml, mr, pt, sh, sl, sn, st, tg

The list it will replace is hardcoded in telephony code
(NitzStateMachine, originally ServiceStateTracker):

bf, ci, eh, fo, gb, gh, gm, gn, gw, ie, lr, is, ma, ml,
mr, pt, sl, sn, st, tg

[Note the second list was supposed to be sorted but wasn't
because of lr being in the wrong place so may not have
been used in all cases].

All entries present in the old list are in the new list.
The new entries reflect country codes that probably aren't
used by phone networks or havea single time zone except for:

es - Spain, because of the Canary Islands in Winter
gl - Greenland, Ittoqqortoormiit and Ittoqqortoormiit

The new data is inarguably correct but it's hard to tell
how many users would be affected. The information is
currently only used to detect the presence of bogus NITZ
signals so it's possible that Spain / Greenland
will not detect / correct for bogus NITZ after this
data is used but might have done so before.

Test: Ran TzLookupGeneratorTest
Bug: 37494871
Change-Id: Ieef8e92a11cb8371c42a6d98925e62141c61e02f