Stop passing in ClusterCA and Endpoint information for Windows nodes

[backjo]

The Windows EKS bootstrap script currently contains a bug related to ServiceCidr calculations when passing in ClusterCA and APIEndpoint information - see awslabs/amazon-eks-ami#805. Until the bootstrap script allows us to provide the ServiceCIDR, we should stop passing in the ClusterCA and Endpoint information to avoid incorrect CIDRs from being calculated.

[codecov]

Codecov Report

Merging #337 (5663c71) into master (5215605) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #337      +/-   ##
==========================================
+ Coverage   51.08%   51.09%   +0.01%     
==========================================
  Files          33       33              
  Lines        4504     4505       +1     
==========================================
+ Hits         2301     2302       +1     
  Misses       2062     2062              
  Partials      141      141              

Impacted Files	Coverage Δ
controllers/provisioners/provisioners.go	100.00% <ø> (ø)
controllers/provisioners/eks/eks.go	87.50% <100.00%> (+0.26%)	⬆️
controllers/provisioners/eks/helpers.go	91.39% <100.00%> (ø)

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[eytan-avisror]

Since it's a bug workaround, should we have a flag to control this behavior? e.g. --disable-windows-cluster-ca-detection or similar? it might be too specific, but that way we won't need another release when it's fixed and we end up giving more flexibility
WDYT

[backjo]

@eytan-avisror it depends on how they fix it - if the fix is to require passing in a ServiceCidr parameter, we'd need another update to propagate that information. I'm fine flagging it for now.

[backjo]

@eytan-avisror - added a flag for the controller to allow toggling injection.