sosreport: adding ovirt_provider_ovn plugin
sosreport: adding ovirt_provider_ovn plugin

With ovirt_provider_ovn plugin[1] added to sosreport, we can now
collect it via ovirt-log-collector as well.

[1] https://github.com/sosreport/sos/commit/523cdb9393059534f97b5b249498aca67c2c45d6

Bug-Url: https://bugzilla.redhat.com/1573143
Change-Id: I6cdaef82ce7ff5a75709d342b3b0ecf9c2942d22
Signed-off-by: Leon Goldberg <f8e2d22a3c74750c7542e43f099559b90189224a@redhat.com>

oVirt/ovirt-log-collector,oVirt/ovirt-log-collector,oVirt/ovirt-log-collector