Move test_cli_remapping into test_cli

[sloretz]

Feature request

Two packages test command line arguments passed to a node: test_cli tests parameters (ex: __params:=/path/to/initialvalues.yaml) while test_cli_remapping tests remap rules (ex: foo:=/bar/foo). The remapping test should be moved into the test_cli package.

Implementation considerations

Bonus points would be to reuse code between the two packages.