Move bandit into pep8

Run security linter bandit as part of pep8. Pep8 is the usual linter
target and thus let's use it there instead of starting another node
for this short-running job.

Also reduced the lines of context from 5 to 3 since it shouldn't
matter to most.

Change-Id: I54a4fccebb375517f9cd129f62f8f0c795b6edcc

oslo_vmware/objects/datastore.py

@@ -310,7 +310,8 @@ class DatastoreURL(object):
             if self._scheme == 'http':
                 conn = httplib.HTTPConnection(self._server)
             elif self._scheme == 'https':
-                conn = httplib.HTTPSConnection(self._server)
+                # TODO(browne): This needs to be changed to use python requests
+                conn = httplib.HTTPSConnection(self._server)  # nosec
             else:
                 excep_msg = _("Invalid scheme: %s.") % self._scheme
                 LOG.error(excep_msg)

tox.ini

@@ -6,7 +6,10 @@ deps = -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]
-commands = flake8
+commands = 
+  flake8
+  # Run security linter
+  bandit -r oslo_vmware
 
 [testenv:pylint]
 deps = -r{toxinidir}/test-requirements.txt
@@ -15,7 +18,7 @@ commands = pylint oslo
 
 [testenv:bandit]
 deps = -r{toxinidir}/test-requirements.txt
-commands = bandit -r oslo_vmware -n 5
+commands = bandit -r oslo_vmware
 
 [testenv:docs]
 commands = python setup.py build_sphinx