feat(system-upgrades): Upgrade to kubernetes version 1.27.4

This patch updates the Kubernetes version to 1.27.4 and also adjust the
install script to do an automated cleanup of the other copr repositories
ensuring consistent results and reduce interference.

infrastructure/system-upgrades/kubernetes.yaml

@@ -16,7 +16,7 @@ stringData:
     #!/bin/bash
     set -e
     set -x
-    secrets="$(dirname "$0")"
+    systemd-run --same-dir --wait --collect --service-type=exec '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 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: |
@@ -82,7 +82,6 @@ spec:
       - key: feature.node.kubernetes.io/system-os_release.VERSION_ID.major
         operator: In
         values:
-          - "37"
           - "38"
       - key: node-role.kubernetes.io/control-plane
         operator: Exists
@@ -94,7 +93,7 @@ spec:
     deleteLocalData: true
     ignoreDaemonSets: true
     force: false
-  version: "1.26.7"
+  version: "1.27.4"
   upgrade:
     image: docker.io/library/fedora:38
     command: ["sh", "/host/run/system-upgrade/secrets/kubernetes-upgrade/upgrade.sh"]