Update the documents with taint as pre-requisite

[ridaz-zz]

What type of PR is this?
/kind bug fix

What this PR does / why we need it:
This PR will bring in the following changes :

1. Set the CPIStatus Phase as Deployed/Configuring when CPI is not assigned with Provider ID
2. In order to bring up CPI and some versions of CSI successfully, the nodes need to be tainted with
   node.cloudprovider.kubernetes.io/uninitialized=true:NoSchedule

Which issue(s) this PR fixes:

Fixes #141

Test Report Added?:

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:
/kind TESTED

Test Report:

1. When CPI is configured successfully

kubectl get pods -A
NAMESPACE           NAME                                      READY   STATUS    RESTARTS   AGE
vmware-system-vdo   vdo-controller-manager-74455b7d4d-mtfgp   2/2     Running   0          44s

vdoctl configure drivers
VDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaultVDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaultVDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaultVDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaults for compatiblity matrix (Y/N) ?  Y
Do you want to configure CloudProvider? (Y/N) Y
Please provide the vcenter IP/FQDN for configuring CloudProvider 
VC IP/ FQDN 10.78.85.172
Do you want to establish a secure connection? (Y/N) N
Please provide the credentials for configuring CloudProvider
Username administrator@vsphere.local
Password ********
Datacenter(s) WCP-DC
Do you want to configure another vcenter for CloudProvider? (Y/N) N
Do you want to configure zones/regions for CloudProvider? (Y/N) N
You have now completed configuration of CloudProvider. We will now proceed to configure StorageProvider.
Please provide the credentials for configuring StorageProvider
Username administrator@vsphere.local
Password ********
Datacenter(s) WCP-DC
Do you wish to provide custom kubelet Path? (Y/N) N
Do you wish to configure File Volumes? (Y/N) N
Thanks for configuring VDO. The drivers will now be installed.
You can check the status for drivers using `vdoctl status`

vdoctl status
CloudProvider   : Configured
	 vCenter : 
		10.78.85.172  (Credentials Verified)
	 Nodes : 
		 worker-vm-7 : ready 
		 master-vm-7 : ready 
StorageProvider : Deployed
	 vCenter : 
		10.78.85.172  (Credentials Verified)

kubectl get pods -A
NAMESPACE           NAME                                      READY   STATUS    RESTARTS   AGE

kube-system         vsphere-cloud-controller-manager-55krr    1/1     Running   0          94s
vmware-system-csi   vsphere-csi-controller-8489c5b7f8-lb65q   6/6     Running   0          86s
vmware-system-csi   vsphere-csi-node-bdgxl                    3/3     Running   0          86s
vmware-system-csi   vsphere-csi-node-wdpjn                    3/3     Running   0          86s

vdoctl version
kubernetes Version : 1.21
VDO Version        : b3e9eba
vSphere Versions   : [7.0.3]
CSI Version        : 2.3.0
CPI Version        : 1.21.0

2. When ProviderID is not assigned

kubectl get pods -A
NAMESPACE           NAME                                     READY   STATUS    RESTARTS   AGE
vmware-system-vdo   vdo-controller-manager-c84bcc8f5-7mqj7   2/2     Running   0          27s

vdoctl configure drivers
VDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaults for compatiblity matrix (Y/N)VDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaults for compatiblity matrix (Y/N)VDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaults for compatiblity matrix (Y/N)VDO is configured with default compatiblity matrix. you can update compatiblity-matrix using 'vdoctl update compatiblity-matrix'. Do you want to use the defaults for compatiblity matrix (Y/N) ?  Y
Do you want to configure CloudProvider? (Y/N) Y
Please provide the vcenter IP/FQDN for configuring CloudProvider 
VC IP/ FQDN 10.78.85.172
Do you want to establish a secure connection? (Y/N) N
Do you want to establish a secure connection? (Y/N) N
Please provide the credentials for configuring CloudProvider
Username administrator@vsphere.local
Password ********
Datacenter(s) WCP-DC
Do you want to configure another vcenter for CloudProvider? (Y/N) N
Do you want to configure zones/regions for CloudProvider? (Y/N) N
You have now completed configuration of CloudProvider. We will now proceed to configure StorageProvider.
Please provide the credentials for configuring StorageProvider
Username administrator@vsphere.local
Password ********
Datacenter(s) WCP-DC
Do you wish to provide custom kubelet Path? (Y/N) N
Do you wish to configure File Volumes? (Y/N) N
Thanks for configuring VDO. The drivers will now be installed.
You can check the status for drivers using `vdoctl status`

vdoctl status
CloudProvider   : Deployed
	 vCenter : 
		10.78.85.172  (Credentials Verified)

StorageProvider : Deployed
	 vCenter : 
		10.78.85.172  (Credentials Verified)

kubectl get pods -A
NAMESPACE           NAME                                      READY   STATUS    RESTARTS   AGE

kube-system         vsphere-cloud-controller-manager-4jdgw    1/1     Running   0          19s
vmware-system-csi   vsphere-csi-controller-8489c5b7f8-9mfxn   6/6     Running   0          16s
vmware-system-csi   vsphere-csi-node-8v9xl                    3/3     Running   0          16s
vmware-system-csi   vsphere-csi-node-rs6mg                    3/3     Running   0          16s
vmware-system-vdo   vdo-controller-manager-c84bcc8f5-7mqj7    2/2     Running   0          2m5s

[codecov-commenter]

Codecov Report

Merging #140 (216beb9) into main (b3e9eba) will increase coverage by 0.25%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #140      +/-   ##
==========================================
+ Coverage   52.12%   52.37%   +0.25%     
==========================================
  Files           6        6              
  Lines        1508     1516       +8     
==========================================
+ Hits          786      794       +8     
  Misses        623      623              
  Partials       99       99              

Flag	Coverage Δ
unittests	52.37% <100.00%> (+0.25%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
controllers/vdoconfig_controller.go	47.73% <100.00%> (+0.38%)	⬆️

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[aggarwalta]

LGTM, thanks!

[asifdxtreme]

LGTM