flow specification.

Change-Id: Iacb8eae8fe7cce769a019ecffa6073c015ff80d1
diff --git a/drivers/flowspec/src/main/resources/flowspec-drivers.xml b/drivers/flowspec/src/main/resources/flowspec-drivers.xml
new file mode 100644
index 0000000..17195c2
--- /dev/null
+++ b/drivers/flowspec/src/main/resources/flowspec-drivers.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2017-present Open Networking Laboratory
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<drivers>
+     <driver name="flowspec" extends="default" manufacturer="" hwVersion="1.0.0" swVersion="1.0.0">
+         <behaviour api="org.onosproject.net.behaviour.ExtensionSelectorResolver"
+                    impl="org.onosproject.driver.flowspec.extensions.MultiExtensionSelectorInterpreter" />
+     </driver>
+</drivers>
+