Update Kubernetes-in-Kubernetes example

[ivan4th]

Make it work with current kubeadm

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This change is 

[jellonek]

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Reviewed 2 of 2 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved.

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examples/README.md, line 44 at r1 (raw file):

Watch progress of the cluster setup via the VM console:

bash

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examples/README.md, line 50 at r1 (raw file):

After it's complete you can log into the master node:

bash

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examples/README.md, line 62 at r1 (raw file):

kubectl get pods --all-namespaces -o wide -w
# Press Ctrl-C when all the pods are ready

bash

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Comments from Reviewable

[lukaszo]

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Review status: all files reviewed at latest revision, 3 unresolved discussions.

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Comments from Reviewable

[pigmej]

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Reviewed 2 of 2 files at r1.
Review status: all files reviewed at latest revision, 3 unresolved discussions, all commit checks successful.

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Comments from Reviewable