tests/docker: update debian-armhf-cross with lcitool

Use lcitool to update debian-armhf-cross to a Debian 11 based system.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220527153603.887929-7-alex.bennee@linaro.org>
diff --git a/.gitlab-ci.d/container-cross.yml b/.gitlab-ci.d/container-cross.yml
index ac15fce..4d1830f 100644
--- a/.gitlab-ci.d/container-cross.yml
+++ b/.gitlab-ci.d/container-cross.yml
@@ -34,8 +34,7 @@
 
 armhf-debian-cross-container:
   extends: .container_job_template
-  stage: containers-layer2
-  needs: ['amd64-debian10-container']
+  stage: containers
   variables:
     NAME: debian-armhf-cross