NtpTrustedTime: Refresh NTP server from resources before requesting time

 * NtpTrustedTime initialized before carrier/country specific resources
   got loaded, so generally the default NTP server is always in use.
 * Always fetch NTP server from resources unless secure NTP server is
   set to ensure that carrier/country specific customization works.

Change-Id: I9b09680ea5640c35660d1cd0b910af22af930144
1 file changed