Add bgp-l3-xl-adoption.yaml automation file

[eduolivares]

Depends-On: openstack-k8s-operators/ci-framework#3397

[openshift-ci]

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[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/728703f46e6a4de1bc1748ec65dd58fd

✔️ noop SUCCESS in 0s
✔️ rhoso-architecture-validate-bgp-l3-xl SUCCESS in 5m 21s
❌ rhoso-architecture-validate-bgp-l3-xl-adoption FAILURE in 4m 06s

[eduolivares]

recheck

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/bf8a2f3ea2134e119b1531f262053c6c

✔️ noop SUCCESS in 0s
✔️ rhoso-architecture-validate-bgp-l3-xl SUCCESS in 5m 45s
❌ rhoso-architecture-validate-bgp-l3-xl-adoption FAILURE in 4m 06s

[softwarefactory-project-zuul]

This change depends on a change that failed to merge.

Change openstack-k8s-operators/ci-framework#3397 is needed.