Use specific glance config for octavia kuttl tests

[gthiemonge]

octavia requires a fully functional glance env, use the layout/single config to get a working glance service.

[gthiemonge]

/hold

[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/e56553d7323c4c5fb10715fad2da167d

✔️ openstack-k8s-operators-content-provider SUCCESS in 1h 55m 45s
❌ install-yamls-crc-podified-edpm-baremetal RETRY_LIMIT in 24m 29s
✔️ podified-multinode-edpm-deployment-crc SUCCESS in 1h 20m 56s

[openshift-ci]

@gthiemonge: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/install-yamls-deploy	67bfedd	link	false	/test install-yamls-deploy

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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/febece5faf2949a6b93d27ae9f2e8ef3

✔️ openstack-k8s-operators-content-provider SUCCESS in 2h 00m 43s
❌ install-yamls-crc-podified-edpm-baremetal RETRY_LIMIT in 21m 55s
✔️ podified-multinode-edpm-deployment-crc SUCCESS in 1h 17m 16s