CameraITS: use linear tonemap in test_exposure

Bug 200096239 (Nvidia)

Change-Id: Icf93c0837cc0350463d48f623ddb5277c252f815
diff --git a/apps/CameraITS/tests/scene1/test_exposure.py b/apps/CameraITS/tests/scene1/test_exposure.py
index d217bdb..605bc53 100644
--- a/apps/CameraITS/tests/scene1/test_exposure.py
+++ b/apps/CameraITS/tests/scene1/test_exposure.py
@@ -54,7 +54,7 @@
         m = 1
         while s*m < sens_range[1] and e/m > expt_range[0]:
             mults.append(m)
-            req = its.objects.manual_capture_request(s*m, e/m)
+            req = its.objects.manual_capture_request(s*m, e/m, True)
             cap = cam.do_capture(req)
             img = its.image.convert_capture_to_rgb_image(cap)
             its.image.write_image(img, "%s_mult=%02d.jpg" % (NAME, m))