Fix for bugs discovered on the QA node

Fix for UnboundLocalError: local variable instance referenced before assignment

• This removes an exception on the neutron server that hides the actual problem on the create_port command

Change to boolean option of verify in SSL certificate validation

• Verify option in session needs to be a boolean. If passed as string, the module will try to load the path to retrieve the certificate chain.
• https://github.com/openstack/keystoneauth/blob/master/keystoneauth1/session.py#L486-L489

Signed-off-by: Jose Castro Leon jose.castro.leon@cern.ch