TestErrorSpam: Restarting the docker service may improve performance

[medyagh]

as seen in
https://storage.googleapis.com/minikube-builds/logs/7586/d512c84/Docker_Linux.html#fail_TestErrorSpam

=== RUN   TestErrorSpam
=== PAUSE TestErrorSpam
=== CONT  TestErrorSpam
--- FAIL: TestErrorSpam (168.88s)
error_spam_test.go:42: (dbg) Run:  out/minikube-linux-amd64 start -p nospam-20200410T153613.393267403-15978 -n=1 --memory=2250 --wait=false --driver=docker 
error_spam_test.go:42: (dbg) Done: out/minikube-linux-amd64 start -p nospam-20200410T153613.393267403-15978 -n=1 --memory=2250 --wait=false --driver=docker : (2m15.474942738s)
error_spam_test.go:57: unexpected stderr line: "* Restarting the docker service may improve performance."
error_spam_test.go:57: unexpected stderr line: "stdout:"
error_spam_test.go:57: unexpected stderr line: "serviceaccount/storage-provisioner unchanged"
error_spam_test.go:57: unexpected stderr line: "clusterrolebinding.rbac.authorization.k8s.io/storage-provisioner unchanged"
error_spam_test.go:57: unexpected stderr line: "stderr:"
error_spam_test.go:49: unexpected error log in stderr: "Error from server (ServerTimeout): error when creating \"/etc/kubernetes/addons/storage-provisioner.yaml\": No API token found for service account \"storage-provisioner\", retry after the token is automatically created and added to the service account"
error_spam_test.go:57: unexpected stderr line: "]"
error_spam_test.go:69: *** TestErrorSpam FAILED at 2020-04-10 15:38:28.868492686 -0700 PDT m=+725.487531520
helpers.go:198: (dbg) Run:  out/minikube-linux-amd64 status --format={{.Host}} -p nospam-20200410T153613.393267403-15978
helpers.go:198: (dbg) Done: out/minikube-linux-amd64 status --format={{.Host}} -p nospam-20200410T153613.393267403-15978: (1.579189399s)

[tstromberg]

This is two separate errors:

* Restarting the docker service may improve performance

This line of stderr should be whitelisted.

and:

error_spam_test.go:49: unexpected error log in stderr: "Error from server (ServerTimeout): error when creating \"/etc/kubernetes/addons/storage-provisioner.yaml\": No API token found for service account \"storage-provisioner\", retry after the token is automatically created and added to the service account"

This is indicative of a real problem.