Update VtsHalEvsV1_*TargetTest

- Removes a requirement of the landscape aspect ratio of the captured
  frames because the Extended View System now allows the video streams
  in any aspect ratio
- Increases the maximum latency of the video stream start request from
  500 ms to 1 second to accommodate the camera system design with the
  additional processing units outside of the head unit
- Reduces a number of additional buffers to allocate from 6 to 2 in
  CameraStreamBuffering test, to be consistent with comments

Bug: 204835095
Test: atest VtsHalEvsV1_0TargetTest and
      atest VtsHalEvsV1_1TargetTest
Change-Id: Id41bde10964b650f78e76d4f97a4588367f7c7fc