Merge pull request #1568 from fluxcd/image-v1beta1

cmd/flux/create_image_policy.go

cmd/flux/create_image_repository.go

cmd/flux/create_image_update.go

cmd/flux/delete_image_policy.go

cmd/flux/delete_image_repository.go

cmd/flux/delete_image_update.go

cmd/flux/export_image_policy.go

cmd/flux/export_image_repository.go

cmd/flux/export_image_update.go

cmd/flux/get_image_all.go

cmd/flux/get_image_policy.go

cmd/flux/get_image_repository.go

cmd/flux/get_image_update.go

cmd/flux/image.go

cmd/flux/reconcile_image_repository.go

cmd/flux/reconcile_image_updateauto.go

cmd/flux/resume_image_repository.go

cmd/flux/resume_image_updateauto.go

cmd/flux/suspend_image_repository.go

cmd/flux/suspend_image_updateauto.go