ci/anv: Add testing of the GLES CTS using ANGLE on TGL.

We're interested in a Vulkan-only stack in Chrome OS, where Android's GLES
would be provided by ANGLE-over-Venus-over-ANV.  Let's get some testing
covering ANGLE-on-ANV first.

This is structured as a single partial job pre-merge to catch most
regressions, and a longer manual job to do full coverage for when you need
to update the xfails list.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20163>

.gitlab-ci/deqp-runner.sh

@@ -21,6 +21,10 @@ export EGL_PLATFORM=surfaceless
 export VK_ICD_FILENAMES="$PWD"/install/share/vulkan/icd.d/"$VK_DRIVER"_icd.${VK_CPU:-$(uname -m)}.json
 export OCL_ICD_VENDORS="$PWD"/install/etc/OpenCL/vendors/
 
+if [ -n "$USE_ANGLE" ]; then
+  export LD_LIBRARY_PATH=/angle:$LD_LIBRARY_PATH
+fi
+
 RESULTS="$PWD/${DEQP_RESULTS_DIR:-results}"
 mkdir -p "$RESULTS"