Migrate Sink integration tests into a single common base test

[Claudenw]

This is to do to the sink integrations what was done to the source side integration tests.

The object is to have one set of integration tests to verify that the sink implementations work across a common set of tests.

The process may include

• Adding sink based components to the commons/test fixtures.
• Adding sink based components to the commons/text fixtures integration/sink package.
• Updating sink tests to utilize the sink based components added above.