Replace mentions of `mcad.ibm.com`

[Bobbins228]

WHY

Why is this change being made?
There have been left over mentions of the mcad.ibm.com domain in the SDK. The majority of the work was completed in #341 but there are still some labels in generate_yaml.py and test files that are applied with the old domain.

WHAT

What is being asked for?
Replace these domains with the codeflare dev domain

HOW

Suggestions for how this may be solved. [Optional]
replace mcad.ibm.com with codeflare.dev

TESTS

List of related tests
N/A

DONE

Bullet point items for what should be completed