Add delete, export, get image-update

This uses the established abstractions to implement the usual
subcommands for the ImageUpdateAutomation type.

I've called the sub-subcommand in each case `image-update`, as a
fairly safe shorthand for the much longer `image-update-automation`.

Signed-off-by: Michael Bridgen <michael@weave.works>

docs/cmd/flux_delete_auto.md

@@ -28,4 +28,5 @@ The delete auto sub-commands delete automation objects.
 * [flux delete](flux_delete.md)	 - Delete sources and resources
 * [flux delete auto image-policy](flux_delete_auto_image-policy.md)	 - Delete an ImagePolicy object
 * [flux delete auto image-repository](flux_delete_auto_image-repository.md)	 - Delete an ImageRepository object
+* [flux delete auto image-update](flux_delete_auto_image-update.md)	 - Delete an ImageUpdateAutomation object
 

docs/cmd/flux_delete_auto_image-update.md

@@ -0,0 +1,41 @@
+## flux delete auto image-update
+
+Delete an ImageUpdateAutomation object
+
+### Synopsis
+
+The delete auto image-update command deletes the given ImageUpdateAutomation from the cluster.
+
+```
+flux delete auto image-update [name] [flags]
+```
+
+### Examples
+
+```
+  # Delete an image update automation
+  flux delete auto image-update latest-images
+
+```
+
+### Options
+
+```
+  -h, --help   help for image-update
+```
+
+### Options inherited from parent commands
+
+```
+      --context string      kubernetes context to use
+      --kubeconfig string   path to the kubeconfig file (default "~/.kube/config")
+  -n, --namespace string    the namespace scope for this operation (default "flux-system")
+  -s, --silent              delete resource without asking for confirmation
+      --timeout duration    timeout for this operation (default 5m0s)
+      --verbose             print generated objects
+```
+
+### SEE ALSO
+
+* [flux delete auto](flux_delete_auto.md)	 - Delete automation objects
+

docs/cmd/flux_export_auto.md

@@ -28,4 +28,5 @@ The export auto sub-commands export automation object in YAML format.
 * [flux export](flux_export.md)	 - Export resources in YAML format
 * [flux export auto image-policy](flux_export_auto_image-policy.md)	 - Export ImagePolicy resources in YAML format
 * [flux export auto image-repository](flux_export_auto_image-repository.md)	 - Export ImageRepository resources in YAML format
+* [flux export auto image-update](flux_export_auto_image-update.md)	 - Export ImageUpdateAutomation resources in YAML format
 

docs/cmd/flux_export_auto_image-policy.md

@@ -16,7 +16,7 @@ flux export auto image-policy [name] [flags]
   # Export all ImagePolicy resources
   flux export auto image-policy --all > image-policies.yaml
 
-  # Export a Provider
+  # Export a specific policy
   flux export auto image-policy alpine1x > alpine1x.yaml
 
 ```

docs/cmd/flux_export_auto_image-update.md

@@ -0,0 +1,44 @@
+## flux export auto image-update
+
+Export ImageUpdateAutomation resources in YAML format
+
+### Synopsis
+
+The export image-update command exports one or all ImageUpdateAutomation resources in YAML format.
+
+```
+flux export auto image-update [name] [flags]
+```
+
+### Examples
+
+```
+  # Export all ImageUpdateAutomation resources
+  flux export auto image-update --all > updates.yaml
+
+  # Export a specific automation
+  flux export auto image-update latest-images > latest.yaml
+
+```
+
+### Options
+
+```
+  -h, --help   help for image-update
+```
+
+### Options inherited from parent commands
+
+```
+      --all                 select all resources
+      --context string      kubernetes context to use
+      --kubeconfig string   path to the kubeconfig file (default "~/.kube/config")
+  -n, --namespace string    the namespace scope for this operation (default "flux-system")
+      --timeout duration    timeout for this operation (default 5m0s)
+      --verbose             print generated objects
+```
+
+### SEE ALSO
+
+* [flux export auto](flux_export_auto.md)	 - Export automation objects
+

docs/cmd/flux_get_auto.md

@@ -28,4 +28,5 @@ The get auto sub-commands print the statuses of the automation objects.
 * [flux get](flux_get.md)	 - Get sources and resources
 * [flux get auto image-policy](flux_get_auto_image-policy.md)	 - Get ImagePolicy statuses
 * [flux get auto image-repository](flux_get_auto_image-repository.md)	 - Get ImageRepository statuses
+* [flux get auto image-update](flux_get_auto_image-update.md)	 - Get ImageUpdateAutomation statuses
 

docs/cmd/flux_get_auto_image-update.md

@@ -0,0 +1,44 @@
+## flux get auto image-update
+
+Get ImageUpdateAutomation statuses
+
+### Synopsis
+
+The get auto image-update command prints the status of ImageUpdateAutomation objects.
+
+```
+flux get auto image-update [flags]
+```
+
+### Examples
+
+```
+  # List all image update automation object and their status
+  flux get auto image-update
+
+ # List image update automations from all namespaces
+  flux get auto image-update --all-namespaces
+
+```
+
+### Options
+
+```
+  -h, --help   help for image-update
+```
+
+### Options inherited from parent commands
+
+```
+  -A, --all-namespaces      list the requested object(s) across all namespaces
+      --context string      kubernetes context to use
+      --kubeconfig string   path to the kubeconfig file (default "~/.kube/config")
+  -n, --namespace string    the namespace scope for this operation (default "flux-system")
+      --timeout duration    timeout for this operation (default 5m0s)
+      --verbose             print generated objects
+```
+
+### SEE ALSO
+
+* [flux get auto](flux_get_auto.md)	 - Get automation statuses
+