kubeadm: don't use the Docker SDK in util/system/docker_validator* #79449
What this PR does / why we need it:
Instead of creating a Docker client and fetching an Info object
Also add unit tests.
This change affects "test/e2e_node/e2e_node_suite_test.go"
this decouples the validator and kubeadm from the Docker SDK.
Which issue(s) this PR fixes:
Special notes for your reviewer:
Does this PR introduce a user-facing change?:
should not be user facing.
3 times, most recently
Jun 27, 2019
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