Improving net test tools and scenarios.

Change-Id: I2b53fa7b28e1135d2356ae58d4ee8ac35184d9b8
diff --git a/tools/test/scenarios/net-teardown.xml b/tools/test/scenarios/net-teardown.xml
new file mode 100644
index 0000000..fa52ce3
--- /dev/null
+++ b/tools/test/scenarios/net-teardown.xml
@@ -0,0 +1,21 @@
+<!--
+  ~ Copyright 2015 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.
+  -->
+<scenario name="net-setup" description="Network teardown steps">
+    <group name="Net-Teardown">
+        <step name="Stop-Mininet" exec="onos-mininet stop"/>
+        <step name="Wipe-Out-Data-After" requires="~Stop-Mininet" exec="onos-wipe-out"/>
+    </group>
+</scenario>
\ No newline at end of file