qa_crowbarsetup: Adjust neutron proposals for Cloud5+
qa_crowbarsetup: Adjust neutron proposals for Cloud5+

Due to changes in barclamp-neutron, new attribute names must be used.
Also enable gre and vlan ml2 type drivers in parallel when using
openvswitch.

aspiers/automation,aspiers/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,aspiers/automation,SUSE-Cloud/automation,vmoravec/automation,vmoravec/automation,vmoravec/automation,aspiers/automation,gosipyan/automation,SUSE-Cloud/automation,vmoravec/automation,gosipyan/automation,gosipyan/automation,gosipyan/automation