Now that `ConfigFileFinder.config_file` attribute is used everywhere and
is constructed from the `--config` CLI option, the now unused
`cli_config` parameters can be safely removed.
Now that the `ConfigFileFinder` has the `.config_file` attribute, switch
the relevant code paths to utilize this public attribute.
Tests have been updated to either construct `ConfigFileFinder` or mock
the object appropriately.
Now that `ConfigFileFinder.ignore_config_files` attribute is used
everywhere and is constructed from the `--isolated` CLI option, the now
unused `isolated` parameters can be safely removed.
Now that the `ConfigFileFinder` has the `.ignore_config_files`
attribute, switch the relevant code paths to utilize this public
attribute.
Tests have been updated to either construct `ConfigFileFinder` or mock
the object appropriately.
Now that `args` parameters is not being used, it is safe to remove from
the constructor signature.
Further work is required to evaluate and clean-up tearing out the
threading-through of `args` from various callers and tests.
