Restore kdump step to gcp-ovn-rt upgrade job

Signed-off-by: Jeremy Poulin <jaypoulz@gmail.com>

ci-operator/step-registry/openshift/upgrade/gcp/ovn-rt/openshift-upgrade-gcp-ovn-rt-workflow.yaml

@@ -5,11 +5,13 @@ workflow:
     pre:
     - chain: ipi-conf-gcp
     - ref: ovn-conf
+    - ref: ipi-conf-debug-kdump-configure-logs
     - chain: ipi-install-stableinitial
     - ref: optional-operators-configure-realtime-tuned-profile
     test:
     - ref: openshift-e2e-test
     post:
+    - ref: ipi-conf-debug-kdump-gather-logs
     - chain: gather-network
     - chain: gather-core-dump
     - chain: ipi-gcp-post