Camera: various external camera CTS fixes

1. Update the FPS range to list (0.5*fps, fps) only
   as webcams tends to skip a lot of frames and not
   able to output at stable framerate.
2. Exif: don't expect focal length to present
3. Thumbnail: allow 0x0 size for no thumbnail output
4. Allow retry some ioctl during configureStream as
   some webcams seems having problem in quick close
   reopen operation.

Test: CTS CameraTest
Bug: 72261912
Change-Id: Ic23b7fb293b7579694c59240e854d750c842886d