Fix how errors are printed

[benmoss]

What this PR does / why we need it:
Fixes how errors are printed. Previously the regular error type would be printed as {}.

Special notes for your reviewer:
https://play.golang.org/p/iynQRn87vVZ demonstrates the bug

Release note:

klogr will now print error types using their `Error()` method.

[neolit123]

TestRollover: klog_test.go:395: info wasn't created

i think this is a flake...
/retest

the change itself LGTM.

[dims]

/approve
/lgtm

[benmoss]

Hmm, looks like something is broken with the combination of GitHub and Travis, the build is done there but GH still reports it as pending

[dims]

/retest

[dims]

/close

[k8s-ci-robot]

@dims: Closed this PR.

In response to this:

/close

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[dims]

/reopen

[k8s-ci-robot]

@dims: Reopened this PR.

In response to this:

/reopen

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[benmoss]

I just did a force push without changing anything to see if that fixes it

[benmoss]

Ah, looks like the travis build is gone now

[neolit123]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: benmoss, dims, neolit123

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [dims]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment