Classify hardware running OVS as an OVS switch.

Without this we use the default abstract switch, which doesn't push a
table-miss entry.

Fixes ONOS-558.

Cherry-picked from onos-1.0.

Change-Id: I296c7fff6e94575e72829fb4e1aa3d1e5b82852c

@@ -16,12 +16,14 @@
 package org.onosproject.openflow.drivers;
 
 
+import java.util.Collections;
+import java.util.List;
+
 import org.onosproject.openflow.controller.Dpid;
 import org.onosproject.openflow.controller.RoleState;
 import org.onosproject.openflow.controller.driver.AbstractOpenFlowSwitch;
 import org.onosproject.openflow.controller.driver.OpenFlowSwitchDriver;
 import org.onosproject.openflow.controller.driver.OpenFlowSwitchDriverFactory;
-
 import org.projectfloodlight.openflow.protocol.OFDescStatsReply;
 import org.projectfloodlight.openflow.protocol.OFMessage;
 import org.projectfloodlight.openflow.protocol.OFPortDesc;
@@ -29,9 +31,6 @@ import org.projectfloodlight.openflow.protocol.OFVersion;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.Collections;
-import java.util.List;
-
 /**
  * A simple implementation of a driver manager that differentiates between
  * connected switches using the OF Description Statistics Reply message.
@@ -63,8 +62,7 @@ public final class DriverManager implements OpenFlowSwitchDriverFactory {
             return new OFSwitchImplCPqD13(dpid, desc, cpqdUsePipeline13);
         }
 
-        if (vendor.startsWith("Nicira") &&
-                hw.startsWith("Open vSwitch")) {
+        if (hw.startsWith("Open vSwitch")) {
             if (ofv == OFVersion.OF_10) {
                 return new OFSwitchImplOVS10(dpid, desc);
             } else if (ofv == OFVersion.OF_13) {