vSphere enable tests for operating systems other than Ubuntu

[ahmedwaleedmalik]

Through #1844, we disabled vSphere e2e tests for all operating systems other than Ubuntu. All the other testing jobs for vSphere that we have other than pull-machine-controller-e2e-vsphere the standard are also now dysfunctional since this PR never updated them.

More details: #1844 (comment)

[kubermatic-bot]

Issues go stale after 90d of inactivity.
After a furter 30 days, they will turn rotten.
Mark the issue as fresh with /remove-lifecycle stale.

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/lifecycle stale

[kubermatic-bot]

Stale issues rot after 30d of inactivity.
Mark the issue as fresh with /remove-lifecycle rotten.
Rotten issues close after an additional 30d of inactivity.

If this issue is safe to close now please do so with /close.

/lifecycle rotten