Windows installer: Use PowerShell to update PATH value to avoid 1024 char truncation

[blueelvis]

1. Fixes the issue where setx was truncating PATH Environment variable on Windows when > 1024 characters
2. Made some Misc fixes to the NSIS Script so that the user is able to see the log during installation/uninstallation

Fixes #2587.

Verified on the following -

1. Windows 10 Enterprise v1809
2. Windows 7 SP1 N Edition

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[k8s-ci-robot]

Hi @blueelvis. Thanks for your PR.

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[minikube-bot]

Can one of the admins verify this patch?

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: blueelvis
To fully approve this pull request, please assign additional approvers.
We suggest the following additional approver: tstromberg

If they are not already assigned, you can assign the PR to them by writing /assign @tstromberg in a comment when ready.

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[blueelvis]

/assign @tstromberg

[blueelvis]

I signed it

[tstromberg]

I'm not familiar with this format - but shouldn't .DESCRIPTION be indented the same amount as .PARAMETER?

[blueelvis]

It looks to be properly indented in my IDE -

[tstromberg]

This looks great. I regret that we have no automated testing of the installer at the moment, so I will have to trust you that this does the right thing with >1024 PATH values.

Truncated PATH's have been a long-standing user complaint, but until now no one has stepped forward to contribute a fix. Thank you for being the one to do so!

[tstromberg]

@minikube-bot OK to test

[blueelvis]

Thanks! I do have the following questions though -

1. Is there any need for an installer which can do silent installations? Maybe we can then write some tests as well to check the PATH variable and ensure that minikube version returns proper output?
2. I downloaded the latest installer after this PR was merged but I didn't see this new code in the installer. Are releases not continuous for this?

[Al4DIN]

Hello I tried the same process to add Minikube to my path bu It's giving me this error.
I'm new to K8s so don't mind my small knowledge.

System.ArgumentOutOfRangeException: La valeur doit être supérieure ou égale à zéro et inférieure à la taille de la mémoire tampon de la console dans cette dimension.
Nom du paramètre : top
La valeur réelle était -1.
   à System.Console.SetCursorPosition(Int32 left, Int32 top)
   à Microsoft.PowerShell.PSConsoleReadLine.ReallyRender(RenderData renderData, String defaultColor)
   à Microsoft.PowerShell.PSConsoleReadLine.ForceRender()
   à Microsoft.PowerShell.PSConsoleReadLine.Paste(Nullable`1 key, Object arg)
   à Microsoft.PowerShell.PSConsoleReadLine.ProcessOneKey(ConsoleKeyInfo key, Dictionary`2 dispatchTable, Boolean ignoreIfNoAction, Object arg)
   à Microsoft.PowerShell.PSConsoleReadLine.InputLoop()
   à Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics) ```