fix(system-upgrades): Adjust missing variable on kubernetes cleanup

infrastructure/system-upgrades/kubernetes.yaml

@@ -16,7 +16,7 @@ stringData:
     #!/bin/bash
     set -e
     set -x
-    systemd-run --same-dir --wait --collect --service-type=exec bash -c 'for repo in $(dnf copr list | grep -v "sheogorath/kubernetes-$(echo "$SYSTEM_UPGRADE_PLAN_LATEST_VERSION" | grep -Poe "\d+\.\d+")" | sed -e \'s/copr.fedorainfracloud.org\///g\'); do sudo dnf copr remove -y "$repo"; done'
+    systemd-run --same-dir --wait --collect --service-type=exec -E SYSTEM_UPGRADE_PLAN_LATEST_VERSION="$SYSTEM_UPGRADE_PLAN_LATEST_VERSION" bash -c 'for repo in $(dnf copr list | grep -v "sheogorath/kubernetes-$(echo "$SYSTEM_UPGRADE_PLAN_LATEST_VERSION" | grep -Poe "\d+\.\d+")" | sed -e "s/copr.fedorainfracloud.org\///g"); do dnf copr remove -y "$repo"; done'
     systemd-run --same-dir --wait --collect --service-type=exec dnf install -y dnf-plugins-core
     systemd-run --same-dir --wait --collect --service-type=exec dnf copr enable -y "sheogorath/kubernetes-$(echo "$SYSTEM_UPGRADE_PLAN_LATEST_VERSION" | grep -Poe "\d+\.\d+")"
   upgrade-kubeadm.sh: |