Allow extensionServices to be specified (#1496)

* Update talconfig.yaml.j2

Allow extensionServices to be specified

* Update config.sample.yaml

Allow extensionServices to be specified

bootstrap/templates/kubernetes/bootstrap/talos/talconfig.yaml.j2

@@ -92,6 +92,24 @@ nodes:
       - #{ manifest }#
       #% endfor %#
     #% endif %#
+    #% if item.extension_services %#
+    extensionServices:
+      #% for es in item.extension_services %#
+      - name: #{ es.name }#
+        configFiles:
+        #% for cf in es.configFiles %#
+          - content: |-
+              #{ cf.content }#
+            mountPath: #{ cf.mountPath }#
+        #% endfor %#
+        #% if es.environment %#
+        environment:
+          #% for env in es.environment %#
+          - #{ env }#
+          #% endfor %#
+        #% endif %#
+      #% endfor %#
+    #% endif %#
   #% endfor %#
 
 patches:

config.sample.yaml

@@ -26,6 +26,14 @@ bootstrap_node_inventory: []
     #   mtu: ""             # (Optional) MTU for the NIC, default is 1500
     #   manifests:          # (Optional) Additional manifests to include after MachineConfig
     #     - extra.yaml      #            See: https://www.talos.dev/v1.7/reference/configuration/extensions/extensionserviceconfig/
+    #   extension_services: # (Optional) Additional talhelper ExtensionServices (supports talenv.sops.yaml envsubst)
+    #     - name: name
+    #       configFiles:
+    #         - content: |-
+    #             ...
+    #       mountPath: ...
+    #       environment:
+    #         - key=value
     # ...
 
 # (Optional) The DNS servers to use for the cluster nodes.