CI: Quieten virtme kernel output

We don't need the entire verbose boot log in CI every time.

Signed-off-by: Daniel Stone <daniels@collabora.com>

.gitlab-ci.yml

@@ -66,7 +66,7 @@ container_prep:
   - meson --prefix="$PREFIX" -Db_sanitize=address ${MESON_OPTIONS} ..
   - ninja -k0
   - ninja install
-  - virtme-run --rw --pwd --kimg /weston-virtme/bzImage --script-dir ../.gitlab-ci/virtme-scripts --qemu-opts -m 1024
+  - virtme-run --rw --pwd --kimg /weston-virtme/bzImage --kopt quiet --script-dir ../.gitlab-ci/virtme-scripts --qemu-opts -m 1024
   - TEST_RES=$(cat $TESTS_RES_PATH)
   - rm $TESTS_RES_PATH
   - cp -R /weston-virtme ./