Start working on feature to indicate a new error has been found when running 'bundle'

Next step is to move error message into BundleStandardOutputsController

[ticket: 61188106]
Change #new to #response in BundleStandardOutputsController

It should have been changes a few commits ago.

[ticket: 61188898]
Refactor test for undiscovered error message from running 'bundle'

Test failing.  Need to modify controller to accept input for testing.

[ticket: 61188106]