Fixed IPv6 format for SSH

[digitalcoyote]

Not very familiar with go, so I have yet to be able to test this, but it appears to be similar to the issue in #576 . I made a similar fix to #625 and I'm working on setting up golang so I can test it.

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[k8s-ci-robot]

Hi @digitalcoyote. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: digitalcoyote
To complete the pull request process, please assign ra489
You can assign the PR to them by writing /assign @ra489 in a comment when ready.

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[minikube-bot]

Can one of the admins verify this patch?

[codecov-io]

Codecov Report

Merging #6110 into master will not change coverage.
The diff coverage is 0%.

@@          Coverage Diff           @@
##           master   #6110   +/-   ##
======================================
  Coverage    36.7%   36.7%           
======================================
  Files         113     113           
  Lines        8355    8355           
======================================
  Hits         3067    3067           
  Misses       4887    4887           
  Partials      401     401

Impacted Files	Coverage Δ
cmd/minikube/cmd/start.go	22.66% <0%> (ø)	⬆️

[digitalcoyote]

Finally got to test it. I don't know if I'll hit another issue, but It's gotten further than before. I double checked the project for another instance of this and did not see one (but as I said I am unfamiliar with Go so I may have overlooked one).
/assign @RA489

[tstromberg]

/ok-to-test