Add support for Kubernetes v1.29 clusters (#382)

This required two changes:
- Remove hostAliases from kube-vip podspec
    This is addressed by adding entries directly to the /etc/hosts
- Do a super-admin.conf switcheroo for the kube-vip static pod
    Add pre and post kubeadm commands for handling kubernetes
    versions v1.29.0+. The prekubeadm command checks if kubeadm
    init has been run and if it is, it replaces the kubeconfig
    hostPath in kube-vip static pod from admin.conf to the
    super-admin.conf. The postkubeadm command checks if
    kubeadm init has been run and if it is, it changes the
    hostPath in kube-vip static pod from super-admin.conf
    back to admin.conf.

templates/base/cluster-with-kcp.yaml

@@ -125,10 +125,6 @@ spec:
                     name: kubeconfig
                 resources: {}
             hostNetwork: true
-            hostAliases:
-              - hostnames:
-                  - kubernetes
-                ip: 127.0.0.1
             volumes:
               - name: kubeconfig
                 hostPath:
@@ -162,8 +158,28 @@ spec:
     preKubeadmCommands:
       - echo "before kubeadm call" > /var/log/prekubeadm.log
       - hostnamectl set-hostname "{{ ds.meta_data.hostname }}"
+      - echo "::1         ipv6-localhost ipv6-loopback" >/etc/hosts
+      - echo "127.0.0.1   localhost" >>/etc/hosts
+      - echo "127.0.0.1   kubernetes" >>/etc/hosts
+      - echo "127.0.0.1   {{ ds.meta_data.hostname }}" >> /etc/hosts
+      - |
+        KUBERNETES_VERSION_NO_V=${KUBERNETES_VERSION#v}
+        VERSION_TO_COMPARE=1.29.0
+        if [ "$(printf '%s\n' "$KUBERNETES_VERSION_NO_V" "$VERSION_TO_COMPARE" | sort -V | head -n1)" != "$KUBERNETES_VERSION_NO_V" ]; then
+          if [ -f /run/kubeadm/kubeadm.yaml ]; then
+            sed -i 's#path: /etc/kubernetes/admin.conf#path: /etc/kubernetes/super-admin.conf#' /etc/kubernetes/manifests/kube-vip.yaml;
+          fi
+        fi
     postKubeadmCommands:
       - echo export KUBECONFIG=/etc/kubernetes/admin.conf >> /root/.bashrc
+      - |
+        KUBERNETES_VERSION_NO_V=${KUBERNETES_VERSION#v}
+        VERSION_TO_COMPARE=1.29.0
+        if [ "$(printf '%s\n' "$KUBERNETES_VERSION_NO_V" "$VERSION_TO_COMPARE" | sort -V | head -n1)" != "$KUBERNETES_VERSION_NO_V" ]; then
+          if [ -f /run/kubeadm/kubeadm.yaml ]; then
+            sed -i 's#path: /etc/kubernetes/super-admin.conf#path: /etc/kubernetes/admin.conf#' /etc/kubernetes/manifests/kube-vip.yaml;
+          fi
+        fi
       - echo "after kubeadm call" > /var/log/postkubeadm.log
     useExperimentalRetryJoin: true
     verbosity: 10