Bump Kubernetes dependencies to 1.10.12

[munnerz]

What this PR does / why we need it:

Bumps the patch version of Kubernetes from 1.10.0 to 1.10.12 in order to resolve some issues around the webhook.

This does not replace the bump for 1.13, but instead is a temporary stop gap that we can cherry pick into the v0.6 release.

Which issue this PR fixes: fixes #1220

Release note:

Bump Kubernetes apimachinery dependencies to v1.10.12

/milestone v0.6
/kind bug
/area important-soon
/cc @kragniz
cc @nixgadget @gordcorp

[kragniz]

/lgtm

[jetstack-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kragniz, munnerz

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[deiwin]

Is there an ETA for a release that would include this patch?

[viswadeep]

how would I get these changes? I am having the same problem as well.

[w32-blaster]

Same by me. I just got blocked by this issue, so a patch release would help us.

!EDIT:
You can use the image tag :canary to get the latest code merged into master, until we get a new release

[whereisaaron]

The aggregation layer isn't working in EKS only due to this dependency, so a release if only with this patch would be helpful.

[viswadeep]

I had the same issue for Cassandra API server on EKS,
I see the authentication layer code looking for a certificate from data (map) in extension-apiserver-authentication config map. Looking at the https://github.com/jetstack/navigator/blob/master/vendor/k8s.io/apiserver/pkg/server/options/authentication.go, if possible get the certificate from a service account and place it! (simple workaround).