Add test for getting datetime-related tag info

Bug: 159569444
Test: atest CtsMediaTestCases:android.media.cts.ExifInterfaceTest\
      #testGetSetDateTime

Change-Id: I9a442accf45d80323e47506bc1a891c2ea4b6462
Merged-In: I9a442accf45d80323e47506bc1a891c2ea4b6462
2 files changed