Add Upgrade Playbook (#236)

* Highlight node reqs.

Signed-off-by: Derek Nola <derek.nola@suse.com>

* Add upgrade playbook

Signed-off-by: Derek Nola <derek.nola@suse.com>

* Move PR template

Signed-off-by: Derek Nola <derek.nola@suse.com>

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Signed-off-by: Derek Nola <derek.nola@suse.com>