Added bandit to designate

Implements: bluprint designate-bandit

Change-Id: If663172fe9d59a2616dbbc5cbe969ec2eeabcd00

tox.ini

@@ -24,6 +24,10 @@ commands = python setup.py build_sphinx -E
 [testenv:cover]
 commands = python setup.py testr --coverage --testr-args='{posargs}'
 
+[testenv:bandit]
+deps = -r{toxinidir}/test-requirements.txt
+commands = bandit -c bandit.yaml -r designate -n5 -p gate
+
 [testenv:debug]
 commands = oslo_debug_helper {posargs}