vendor: update docker import

[jessfraz]

whats up :)

So fun story, I was trying to update the docker API types for kubernetes/kubernetes#64283 but since pkg/tlsconfig no longer exists in the updated repo, and cadvisor depends on the client package which depends on pkg/tlsconfig I could not... so this is also updating the docker dep here

cc @vishh

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[googlebot]

CLAs look good, thanks!

[dashpole]

Is this needed for 1.11? Trying to determine urgency :)

[jessfraz]

it can wait :)

[dashpole]

looks good!

[jessfraz]

Thanks!!

[dashpole]

You can update the cAdvisor godeps in master without a release once the 1.11 release has been cut. We just need to make sure k/k releases have a versioned cAdvisor release, but master can be updated to a specific commit.

[jessfraz]

awesome, thanks!