add a task for looking at an info object

[johrstrom]

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What does this PR do?

Adds a task to print OodCore::Info object in json format. While reviewing an upstream ondemand request I wondered about the format of certain fields, specifically time fields and how they were formatted. This task helps generate an object to inspect a given fields format.

Related issue

Does not close any issue.

Testing

• Tests included
• No tests needed — reason: it's a rake task

Checklist

• Follows project code style and conventions
• Documentation provided (if new feature, adapter or behavior change)
• This is a large feature and was discussed in an issue first (if applicable)

Anything else?

Screenshots, context, or anything reviewers should pay close attention to.

[Bubballoo3]

Looks good! Very useful too as it reminded me to include total memory in to_h as part of #958!

[johrstrom]

it reminded me to include total memory in to_h as part of #958!

Should probably refactor that to instance_variables.to_h?