[DO-1534] Configure Storage Backend Huawei CSI Plugin on k8s prod (!27)

[DO-1534]

Co-authored-by: denis.patrakeev <denis.patrakeev@avroid.tech>
Reviewed-on: https://git.avroid.tech/K8s/k8s-configs/pulls/27

clusters/k8s-avroid-office.prod.local/namespaces/huawei-csi/huawei-csi-backend.yaml

@@ -0,0 +1,20 @@
+---
+storage: "oceanstor-san"
+name: "san-01-iscsi"
+namespace: "huawei-csi"
+urls:
+  - "https://172.20.0.253:8088"
+  - "https://172.20.0.254:8088"
+pools:
+  - "raid10"
+  - "raid6"
+parameters:
+  protocol: "iscsi"
+  portals:
+    - "172.20.0.253"
+    - "172.20.0.254"
+    - "172.21.0.253"
+    - "172.21.0.254"
+    - "172.22.0.253"
+    - "172.22.0.254"
+maxClientThreads: "30"