Show containers even when renderDecisions is false

[jonsnyder]

Description

This adds 4 functional tests around making sure that showContainers is called promptly in different scenarios. One issue the tests found was that when renderDecisions is false, showContainers was not being called. I fixed that use-case here.

Related Issue

Motivation and Context

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Improvement (non-breaking change which does not add functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA or I'm an Adobe employee.
• I have made any necessary test changes and all tests pass.
• I have run the Sandbox successfully.

[jfkhoury]

Love the tests!