ci/bare-metal: pass thorugh PIGLIT env vars

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <mesa/mesa!7370>

.gitlab-ci/bare-metal/rootfs-setup.sh

@@ -55,6 +55,8 @@ for var in \
     NIR_VALIDATE \
     PIGLIT_HTML_SUMMARY \
     PIGLIT_JUNIT_RESULTS \
+    PIGLIT_OPTIONS \
+    PIGLIT_PLATFORM \
     PIGLIT_PROFILES \
     PIGLIT_REPLAY_ARTIFACTS_BASE_URL \
     PIGLIT_REPLAY_DESCRIPTION_FILE \