fix corsa pipeline divergence : need to differentiate between write and apply instructions.

Change-Id: I477d27d6e52a8e09744614e5f5aa843dd26331e0
diff --git a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer10.java b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer10.java
index 584f448..39694b4 100644
--- a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer10.java
+++ b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowModBuilderVer10.java
@@ -207,6 +207,8 @@
         case VLAN_PCP:
             ModVlanPcpInstruction vlanPcp = (ModVlanPcpInstruction) l2m;
             return factory().actions().setVlanPcp(VlanPcp.of(vlanPcp.vlanPcp()));
+        case STRIP_VLAN:
+            return factory().actions().stripVlan();
         default:
             log.warn("Unimplemented action type {}.", l2m.subtype());
             break;