doc: update chart doc

Author: andyzhangx

README.md

@@ -40,8 +40,8 @@ Please refer to `blob.csi.azure.com` [driver parameters](./docs/driver-parameter
 This option does not depend on cloud provider config file, supports cross subscription and on-premise cluster scenario. Refer to [detailed steps](./deploy/example/e2e_usage.md#option2-bring-your-own-storage-account).
 
 ### Install driver on a Kubernetes cluster
- - install via [kubectl](./docs/install-blob-csi-driver.md) on public Azure (please use helm for other cloud environments, e.g. Azure Stack)
- - install via [helm charts](./charts) on public Azure and Azure Stack
+ - install via [kubectl](./docs/install-blob-csi-driver.md) on public Azure (please use helm for Azure Stack, RedHat/CentOS)
+ - install via [helm charts](./charts) on public Azure, Azure Stack, RedHat/CentOS
 
  - (Preview) install [blobfuse-proxy](./pkg/blobfuse-proxy) to make blobfuse mount still available after driver restart
 

charts/README.md

@@ -12,15 +12,20 @@ helm repo add blob-csi-driver https://raw.githubusercontent.com/kubernetes-sigs/
 helm install blob-csi-driver blob-csi-driver/blob-csi-driver --namespace kube-system
 ```
 
+### install a specific version
+```console
+helm repo add blob-csi-driver https://raw.githubusercontent.com/kubernetes-sigs/blob-csi-driver/master/charts
+helm install blob-csi-driver blob-csi-driver/blob-csi-driver --namespace kube-system --version v1.1.0
+```
+
 ## install on Azure Stack
 ```console
 helm install blob-csi-driver blob-csi-driver/blob-csi-driver --namespace kube-system --set cloud=AzureStackCloud
 ```
 
-### install a specific version
+### install on RedHat/CentOS
 ```console
-helm repo add blob-csi-driver https://raw.githubusercontent.com/kubernetes-sigs/blob-csi-driver/master/charts
-helm install blob-csi-driver blob-csi-driver/blob-csi-driver --namespace kube-system --version v1.1.0
+helm install blob-csi-driver blob-csi-driver/blob-csi-driver --namespace kube-system --set linux.distro=fedora
 ```
 
 ### search for all available chart versions