add ability to override autoupdating drivers

[sharifelgamal]

No description provided.

[k8s-ci-robot]

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[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@a84b3a9). Click here to learn what that means.
The diff coverage is 8.33%.

@@            Coverage Diff            @@
##             master    #5640   +/-   ##
=========================================
  Coverage          ?   37.83%           
=========================================
  Files             ?      103           
  Lines             ?     7591           
  Branches          ?        0           
=========================================
  Hits              ?     2872           
  Misses            ?     4342           
  Partials          ?      377

Impacted Files	Coverage Δ
pkg/drivers/drivers.go	8.39% <0%> (ø)
cmd/minikube/cmd/start.go	22.24% <16.66%> (ø)