cheets_CTS_P: Add testAllocationFromCameraFlexibleYuv to manual test.

We need to make sure it runs under sufficient illumination.

BUG=b:134970940
TEST=cheets_CTS_P.9.0_r8.arm.CtsCamera

Change-Id: I2d2f2fc093a31015758c0e6ebf2d418245c76e51
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/1657866
Reviewed-by: Kazuhiro Inaba <kinaba@chromium.org>
Tested-by: Kazuhiro Inaba <kinaba@chromium.org>
diff --git a/server/site_tests/cheets_CTS_P/manual_tests/camera_illumination.yaml b/server/site_tests/cheets_CTS_P/manual_tests/camera_illumination.yaml
index aa0559c..c209422 100644
--- a/server/site_tests/cheets_CTS_P/manual_tests/camera_illumination.yaml
+++ b/server/site_tests/cheets_CTS_P/manual_tests/camera_illumination.yaml
@@ -1,3 +1,4 @@
+android.hardware.camera2.cts.AllocationTest#testAllocationFromCameraFlexibleYuv: [reef]
 android.hardware.camera2.cts.CaptureRequestTest#testEdgeModeControl: [nautilus]
 android.hardware.camera2.cts.CaptureRequestTest#testNoiseReductionModeControl: [nautilus]
 android.hardware.camera2.cts.ImageReaderTest#testYuvAndJpeg: [coral]