Bandit automatically [uses any .bandit file] within the directories on
which it is invoked. Since ALE invokes bandit on stdin, it does not
load a .bandit file automatically. Add support for automatically
finding a .bandit file and passing it to bandit via the --ini option
along with a variable to disable this behavior if desired.
Note: This is useful for the skips and tests configuration options, but
not exclude which would require invoking bandit using a file name, which
may or may not be a good trade-off.
[uses any .bandit file]: https://github.com/PyCQA/bandit/blob/1.5.1/bandit/cli/main.py#L70-L73
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
