test/test-data*: add park_joy_90p_8_420_monochrome.y4m

since:
f00cc2b29 Only output luma in y4m monochrome output

Change-Id: I342d0263a9c2c9bb9cf27be942140cf783fb81b7
(cherry picked from commit f8a5dc3bf270b2b79016e8c1b23daae065a70019)

test/test-data.sha1

diff --git a/test/test-data.sha1 b/test/test-data.sha1
index 67aeb52..ddb23a5 100644
--- a/test/test-data.sha1
+++ b/test/test-data.sha1
@@ -356,4 +356,5 @@
 25a4940922761239809d82c45c2be1c5e4f48785 *av1-1-b8-01-size-224x226.ivf
 87ae7e7558241bf3575a333f56fbad4dfdade8ff *av1-1-b8-01-size-224x226.ivf.md5
 40dd208eb525cd90d7c0674cf787097fb909afae *av1-1-b8-01-size-226x226.ivf
-34bdef682a4eae0e0a05e4486a968af1df8b220a *av1-1-b8-01-size-226x226.ivf.md5
\ No newline at end of file
+34bdef682a4eae0e0a05e4486a968af1df8b220a *av1-1-b8-01-size-226x226.ivf.md5
+d3ed7de0aa8c155fe35e0f5f4203240710d31383 *park_joy_90p_8_420_monochrome.y4m

test/test_data_util.cmake

diff --git a/test/test_data_util.cmake b/test/test_data_util.cmake
index 66000bf..f848128 100644
--- a/test/test_data_util.cmake
+++ b/test/test_data_util.cmake
@@ -22,6 +22,7 @@
             "park_joy_90p_12_444.y4m"
             "park_joy_90p_8_420_a10-1.y4m"
             "park_joy_90p_8_420.y4m"
+            "park_joy_90p_8_420_monochrome.y4m"
             "park_joy_90p_8_422.y4m"
             "park_joy_90p_8_444.y4m"
             "desktop_credits.y4m"