Updated openstack/openstack
Project: openstack/neutron  4bdee18097a1362dba212ba8e13a50ec2ceab8c5

Enable undefined-loop-variable pylint check

This required a trivial refactor of two existing cases in the codebase.

These two cases were perfectly correct, but the check uncovered a 3rd
case which was a real bug (fixed separately).  The new versions also
make it clear that if the loop fails to break early then the 'result' is
None (and thus an error) and not simply the last element.  On balance,
it's probably worth enforcing this small inconvenience to coding style.

Change-Id: I780a95241f1454c6886d91f980eb9ada7678a119
Related-Bug: #1362466