Change in vdsm[master]: openstack_net hook: search for ovs_vsctl only when needed

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Change subject: openstack_net hook: search for ovs_vsctl only when needed
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Patch Set 3:

Build Successful

http://jenkins.ovirt.org/job/vdsm_unit_tests_gerrit_el/6716/ : SUCCESS

http://jenkins.ovirt.org/job/vdsm_master_pep8_gerrit/7506/ : SUCCESS

http://jenkins.ovirt.org/job/vdsm_unit_tests_gerrit/7616/ : SUCCESS