Implement country-dependent detection logic

Implement country-dependent detection logic: in some countries
we can be more certain that the default time zone is going to work for a
majority of users.

Test: atest com.android.internal.telephony.TimeZoneLookupHelperTest
Test: atest com.android.internal.telephony.NitzStateMachineImplTest
Test: atest com.android.internal.telephony.NitzStateMachineTestSupportTest
Bug: 141727033
Bug: 141740972
Change-Id: Ic4d1cc74e757de0b1e1166a0e4ac0bde1265dccb