* Added mount options support for azure disk. For example:

```
kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: hdd
provisioner: kubernetes.io/azure-disk
mountOptions:
  - barrier=1
  - acl
parameters:
  skuname: Standard_LRS
  kind: Managed
  fstype: ext3
```

([#56147](https://github.com/kubernetes/kubernetes/pull/56147), [@andyzhangx](https://github.com/andyzhangx))

(including implicit pointer indirections in <a href="#Selectors">selectors</a>)
on the left and the expressions on the right are all
<a href="#Order_of_evaluation">evaluated in the usual order</a>.
Second, the assignments are carried out in left-to-right order.
</p>

<pre>
a, b = b, a  // exchange a and b

x := []int{1, 2, 3}
i := 0
i, x[i] = 1, 2  // set i = 1, x[0] = 2

i = 0

Danijar Hafner, Erik Erwitt, Fabrizio Milo, Felix Maximilian Möller, Henry
Saputra, Sung Kim, Igor Babuschkin, Jan Zikes, Jeremy Barnes, Jesper Steen
Møller, Johannes Mayer, Justin Harris, Kashif Rasul, Kevin Robinson, Loo Rong
Jie, Lucas Moura, Łukasz Bieniasz-Krzywiec, Mario Cho, Maxim Grechkin, Michael
Heilman, Mostafa Rahmani, Mourad Mourafiq, @ninotoshi, Orion Reblitz-Richardson,