ci/bare-metal: Move devcoredump capture to CI common

Reusing this for LAVA sounds like a good idea!

Signed-off-by: Daniel Stone <daniels@collabora.com>
Acked-by: Martin Peres <martin.peres@mupuf.org>
Acked-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11337>

.gitlab-ci/common/capture-devcoredump.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+while true; do
+  devcds=`find /sys/devices/virtual/devcoredump/ -name data 2>/dev/null`
+  for i in $devcds; do
+    echo "Found a devcoredump at $i."
+    if cp $i /results/first.devcore; then
+      echo 1 > $i
+      echo "Saved to the job artifacts at /first.devcore"
+      exit 0
+    fi
+  done
+  sleep 10
+done