Implement videoOnPasses config option

[kamituel]

Current behavior:

When video configuration option is set, Cypress will encode and save video regardless of whether any test in the run failed, or not. This increases the time required to complete the test run and wastes disk resources on CI agents.

Desired behavior:

A new setting option videoOnPasses, or a change to the existing video, that would make it possible to configure Cypress to encode and save a video recording of a test run only if there was a test failure.

This would be in a way equivalent to videoUploadOnPasses, but would prevent Cypress from even encoding a video file, not just from uploading it to the Dashboard.

This can be achieved partly by just checking the exit code of the Cypress' process, and deleting video artifacts the test run was successful, but then we'd still waste time encoding the video files.

Versions

3.1.3

[jennifer-shehane]

Duplicate of #2522