Merge patch series "Gitlab: Add a "sage-lab" stage to access a board farm"

This series adds support for Gitlab pipelines to run our pytest suite on
a limited number of hardware platforms. While better documentation and
some further enhancements will be coming soon, this can be triggered by
passing '-o ci.variable="SAGE_LAB=1"' to git push, or adding
'pushOption = ci.variable="SAGE_LAB=1"' to the .git/config file for the
project. It can also be invoked manually from the pipeline webpage on a
an existing pipeline.

Link: https://lore.kernel.org/r/20251118210015.624758-1-trini@konsulko.com

.gitlab-ci.yml

@@ -5,6 +5,7 @@ variables:
   DEFAULT_AMD64_TAG: "amd64"
   DEFAULT_FAST_TAG: "fast"
   MIRROR_DOCKER: docker.io
+  SAGE_LAB: ""
   SJG_LAB: ""
   PLATFORM: linux/amd64,linux/arm64
 
@@ -24,6 +25,7 @@ image: ${MIRROR_DOCKER}/trini/u-boot-gitlab-ci-runner:noble-20251001-11Nov2025
 stages:
   - testsuites
   - test.py
+  - sage-lab
   - sjg-lab
   - world build
 
@@ -606,6 +608,9 @@ coreboot test.py:
     TEST_PY_ID: "--id qemu"
   <<: *buildman_and_testpy_dfn
 
+# Add sage-lab stage
+include: .gitlab-ci-sage-lab.yml
+
 .sjg_lab_template: &sjg_lab_dfn
   stage: sjg-lab
   rules: