Add enableTTL experiment

[blefebvre]

Description

Dispatcher versions 4.1.11 and greater can be configured to respect a time-to-live (TTL) based content "timeout". Use this experiment to see how it works.

Motivation and Context

enableTTL is commonly misunderstood. This experiment lets you try it out.

How Has This Been Tested?

• Experiment has been tested locally with an environment which was created by following the "Getting set up" steps

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.