* Force collections to be static
Templating of collection names does not work at all. Force them to
be static so that a warning is generated for the user.
* Add collectionsearch unit test and fix for reviews
New unit test validates the new _load_collections() code and moves
the new check to the end of the method.
* Change unit test to pytest
* Adjust unit test to use capsys instead of monkeypatch
* Fix pep8 error
* Add changelog fragment
Closes#68704
