octane upgrade-control fails on removing patches from old cluster

[Sergey Murashov]

Steps to reproduce:
1) Try to switch control plane from 6.1 cics to 7.0 cic via octane upgrade-control <orig_id> <seed_id>

Actual result:
2015-09-15 12:27:59 INFO octane.util.subprocess Started process ovs-vsctl[at node-1]: ovs-vsctl del-port br-floating br-floating--br-ex │·························
2015-09-15 12:27:59 ERROR octane.util.subprocess ovs-vsctl[at node-1] stderr: ovs-vsctl: no port named br-floating--br-ex │·························
2015-09-15 12:27:59 INFO octane.util.subprocess Process ovs-vsctl finished with return value 1 │·························
2015-09-15 12:27:59 ERROR octane Command 'ovs-vsctl' returned non-zero exit status 1

[Oleg S. Gelbukh (gelbuhos)]

This bug appeared because fuel-octane script incorrectly identified bridge provider as OVS while it is actually provided by linux bridge.

This is fixed by correcting version to compare to: https://review.openstack.org/#/c/223607/