Feature request: Output format option

[goffinf]

It would be useful to be able to output test results in a machine processable standard format (say) JSON or TAPS.

That would allow easier integration with build pipelines where test result would be more easily parsed and the build allowed to continue to fail based on results.

Regards

Fraser.

[nkubala]

We just added something similar to this to our container-diff tool: https://github.com/GoogleCloudPlatform/container-diff/pull/173. We could probably adapt some of this code to container-structure-test as well, though it might be a bit trickier since all of the output goes through the golang testing library.

[trimble]

Was this already addressed as part of #254 and #186 ?