fix: updates to talos taskfile and readme

Signed-off-by: Devin Buhl <devin@buhl.casa>

.taskfiles/Talos/Taskfile.yaml

@@ -40,7 +40,7 @@ tasks:
     desc: Upgrade Talos on a node
     dir: '{{.KUBERNETES_DIR}}/bootstrap/talos'
     cmds:
-      - talosctl --nodes {{.NODE}} upgrade --image {{.IMAGE}} --wait=true --timeout=10m --preserve=true --reboot-mode={{.MODE}}
+      - talosctl --nodes {{.NODE}} upgrade --image {{.IMAGE}} --timeout=10m --reboot-mode={{.MODE}}
       - talosctl --nodes {{.NODE}} health --wait-timeout=10m --server=false
     vars:
       MODE: '{{.MODE | default "default"}}'
@@ -52,21 +52,23 @@ tasks:
       - msg: Unable to retrieve Talos config
         sh: talosctl config info >/dev/null 2>&1
       - msg: Node not found
-        sh: talosctl --nodes {{.node}} get machineconfig >/dev/null 2>&1
+        sh: talosctl --nodes {{.NODE}} get machineconfig >/dev/null 2>&1
 
   upgrade-k8s:
     desc: Upgrade Kubernetes across the cluster
     dir: '{{.KUBERNETES_DIR}}/bootstrap/talos'
-    cmd: talosctl --nodes {{.CONTROLLER}} upgrade-k8s --to {{.TO}}
+    cmd: talosctl --nodes {{.NODE}} upgrade-k8s --to {{.VERSION}}
     requires:
-      vars: ['CONTROLLER', 'TO']
+      vars: ['NODE', 'VERSION']
     preconditions:
       - msg: Missing talosconfig
         sh: test -f {{.TALOSCONFIG}}
       - msg: Unable to retrieve Talos config
         sh: talosctl config info >/dev/null 2>&1
       - msg: Node not found
-        sh: talosctl --nodes {{.CONTROLLER}} get machineconfig >/dev/null 2>&1
+        sh: talosctl --nodes {{.NODE}} get machineconfig >/dev/null 2>&1
+      - msg: Node not controller
+        sh: talosctl config info --output json | jq --exit-status '.endpoints | index("{{.NODE}}") != null'
 
   nuke:
     desc: Resets nodes back to maintenance mode