Add test using mock test framework for storage/data_lake

[thovoll]

There are no integration tests for the data lake API. End to end (e2e) tests are not run in CI.

[thovoll]

Learned from @rylev that mock testing framework will replace the emulator tests so renamed this issue to reflect this.

[thovoll]

This requires converting all the existing operations to the pipeline architecture, otherwise the playback won't work in CI.

[thovoll]

I don't think we can include this in 0.1.0 because of the need to convert all the old operations.

[roeap]

@cataggar - this should be done as well, all - or at least most - tests in the datalake crate use the mock testing framework.