Chef 1095 Add the missing contents in the files of aws cloudtrail trail resource

[soumyo13]

Description

1. Add the 2 attributes in the integration test of the singular resource.
2. Add the 2 attributes in the docs of the singular resource.

Issues Resolved

NA

Check List

Please fill box or appropriate ([x]) or mark N/A.

• [x] New functionality includes integration tests/controls
• [ ] New Terraform resources
• [x] Documentation provided or updated for resources
• [x] All Integration Tests pass
• [x] All Unit Tests pass
• [x] rake lint passes
• [x] All commits have been signed-off for the Developer Certificate of Origin. See https://github.com/chef/chef/blob/master/CONTRIBUTING.md#developer-certification-of-origin-dco

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[soumyo13]

NOTE: Don't merge this PR until https://github.com/inspec/inspec-aws/pull/967 is merged.

[soumyo13]

These should all be trail not trial. Other than that, it looks good.

@IanMadd I have changed it. Please check.