support new NITZ HAL API

 - support the new parameter "ageMs"
 - add a new unit test for NITZ with Age in ServiceStateTrackerTest

Bug: 195418436
Test: 1. build pass
      2. atest ServiceStateTrackerTest#testSetTimeFromNITZStr_withoutAge
      3. atest ServiceStateTrackerTest#testSetTimeFromNITZStr_withAge
Change-Id: I5c2d7db25309d5f25561edb22816e2608e77a4c4