Update external huawei cloud controller to 0.26.6 (#10824)

* Update huaweicloud controller to 0.26.6

See <https://github.com/kubernetes-sigs/cloud-provider-huaweicloud/compare/v0.26.3...v0.26.6>

* Update huaweicloud sample to use 0.26.6

inventory/sample/group_vars/all/huaweicloud.yml

@@ -14,4 +14,4 @@
 
 ## The repo and tag of the external Huawei Cloud Controller image
 # external_huawei_cloud_controller_image_repo: "swr.ap-southeast-1.myhuaweicloud.com"
-# external_huawei_cloud_controller_image_tag: "v0.26.3"
+# external_huawei_cloud_controller_image_tag: "v0.26.6"

roles/kubernetes-apps/external_cloud_controller/huaweicloud/defaults/main.yml

@@ -16,4 +16,4 @@ external_huaweicloud_cloud: "{{ lookup('env','OS_CLOUD') }}"
 ##    arg2: "value2"
 external_huawei_cloud_controller_extra_args: {}
 external_huawei_cloud_controller_image_repo: "swr.ap-southeast-1.myhuaweicloud.com"
-external_huawei_cloud_controller_image_tag: "v0.26.3"
+external_huawei_cloud_controller_image_tag: "v0.26.6"