fix(system-upgrade): Make fedora 36 upgrade idempotent

By simply exiting successful, when F36 is already installed, this should
smoothly make this script idempotent enough for current use.

infrastructure/system-upgrades/fedora-system-upgrade.yaml

@@ -10,9 +10,12 @@ stringData:
     #!/bin/sh
     set -e
     set -x
+    if grep "Fedora release 36" /etc/fedora-release; then
+      exit 0
+    fi
     systemd-run --same-dir --wait --collect --service-type=exec dnf install -y dnf-plugin-system-upgrade
-    systemd-run --same-dir --wait --collect --service-type=exec dnf system-upgrade download -y --best --releasever=36 --exclude="kubernetes*"
-    systemd-run --same-dir --wait --collect --service-type=exec dnf system-upgrade --exclude="kubernetes*" -y reboot
+    systemd-run --same-dir --wait --collect --service-type=exec dnf system-upgrade download -y --best --releasever=36
+    systemd-run --same-dir --wait --collect --service-type=exec dnf system-upgrade -y reboot
 ---
 apiVersion: upgrade.cattle.io/v1
 kind: Plan