HACKING: add example for talking to MCS via curl

[miabbott]

I ran into this question while verifying #1960, so let's document it

[openshift-ci-robot]

@miabbott: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/okd-e2e-aws	364f083	link	/test okd-e2e-aws
ci/prow/e2e-ovn-step-registry	364f083	link	/test e2e-ovn-step-registry

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[kikisdeliveryservice]

here's your confirmation your curl -H "Accept..." indeed works 😄

/assign @yuqi-zhang

[yuqi-zhang]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ashcrow, miabbott, yuqi-zhang

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• OWNERS [ashcrow,yuqi-zhang]

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[kikisdeliveryservice]

/skip

[kikisdeliveryservice]

Doc only retest not required

/override ci/prow/e2e-gcp-upgrade

[openshift-ci-robot]

@kikisdeliveryservice: Overrode contexts on behalf of kikisdeliveryservice: ci/prow/e2e-gcp-upgrade

In response to this:

Doc only retest not required

/override ci/prow/e2e-gcp-upgrade

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.