Revert "Remove redis"

[lmiccini]

This reverts commit 312d139.

Resolved a few conflicts related to having merged PR#237.

Related: https://issues.redhat.com/browse/OSPRH-9167

[lmiccini]

/test infra-operator-build-deploy-kuttl

[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/21376b058e944b53a5bdd5399473a3c9

✔️ openstack-k8s-operators-content-provider SUCCESS in 1h 44m 24s
✔️ podified-multinode-edpm-deployment-crc SUCCESS in 1h 13m 29s
❌ cifmw-crc-podified-edpm-baremetal RETRY_LIMIT in 13m 36s

[lmiccini]

recheck

[stuggi]

/lgtm

[openshift-ci]

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