Add a check for the easy_install resource

[tas50]

What category of cop is this?:

Please try to select as few as possible.

• Deprecation - A cop that alerts to a deprecation in the Chef Infra Client
• Correctness - A cop that alerts when incorrect coding behavior is being used
• Sharing - A cop that alerts to missing functionality necessary for sharing cookboooks with others
• Style - A cop that alerts to a style best practice
• Simplification - A cop that alerts to ways code can be simplified through refactoring
• Effortless - A cop that alerts on code that must be resolved to move to the Effortless pattern
• Policyfiles - A cop that alerts on code that must be resolved to move to the Policyfiles pattern

Describe the new cop:

We removed this resource in Chef 13

What it would trigger on:

Any usage of easy_install

What it would autocorrect to if applicable

N/A