Comment 3 for bug 1671138

Can't edit an answer ? x)
Anyway, sorry about that....

There was a strange frame to which the server answered "SSL error", but the frame was not an SSL request, I don't really know what it was
There was no reason for the server to answer SSL request since there were no SSL or https option anywhere in all my config files related to openstack

The issue was resolved by editing neutron.conf and adding :

identity_uri = http://localhost:35357
admin_user = admin
admin_password ADMIN_PASSWORD
admin_tenant_name = admin
auth_type = password

not sure why it needed that though, since neutron is supposed to have admin credential from openstack roles

I still think that it's either a bug or a lack of information in the tutorial