Docs: B605 Severity Inaccurate

[Gage Hugo]

According to the docs for B605[0], this should report back with a MEDIUM severity if this condition is met. However the code[1] has this condition returning a LOW severity. It appears that in a previous patch[2] that a case for special characters was removed, and the docs[3] were never updated to match.

[0] https://docs.openstack.org/bandit/latest/plugins/start_process_with_a_shell.html
[1] https://github.com/openstack/bandit/blob/master/bandit/plugins/injection_shell.py#L31
[2] https://github.com/openstack/bandit/commit/8f74c51935058cacd77ee2a2a40dc6e6efbde4a2#diff-5abc40c6b98a9c677ed95d1ffec0ad66L41
[3] https://docs.openstack.org/bandit/latest/plugins/start_process_with_a_shell.html

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/532942
Committed: https://git.openstack.org/cgit/openstack/bandit/commit/?id=32c27bdcdf220ff24c4c29fa000ef0dffdc47d59
Submitter: Zuul
Branch: master

commit 32c27bdcdf220ff24c4c29fa000ef0dffdc47d59
Author: Tin Lam <email address hidden>
Date: Thu Jan 11 12:43:27 2018 -0600

    Update documentation

    In patch [0], B605 no longer will return a MEDIUM severity, instead
    it will return a LOW severity. However, the documentation was never
    updated to match the change [1]. This patch set updates the
    documentation to match the update.

    [0] https://github.com/openstack/bandit/commit/8f74c51935058cacd77ee2a2a40dc6e6efbde4a2#diff-5abc40c6b98a9c677ed95d1ffec0ad66L41
    [1] https://docs.openstack.org/bandit/latest/plugins/start_process_with_a_shell.html

    Closes-Bug: #1742493

    Change-Id: I201c259313aef09b3d68cca54380dc47033a5b26
    Signed-off-by: Tin Lam <email address hidden>