[ONOS-4880][ONOS-5021]IETF TE Topology Provider

The provider introduces IETF TE Topology YANG models and interacts with RESTCONF
client and YMS to provide IETF TE Topology to TE Topology Core subsystem.

This issue implements the interaction with RESTCONF client to obtain network topology
in JSON from south bound.

Change-Id: If203a98db69a516c8b09cb9247724e49a95abe4f
diff --git a/providers/ietfte/topology/features.xml b/providers/ietfte/topology/features.xml
new file mode 100644
index 0000000..b6f1008
--- /dev/null
+++ b/providers/ietfte/topology/features.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!--
+  ~ Copyright 2016-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.
+  -->
+<features xmlns="http://karaf.apache.org/xmlns/features/v1.2.0" name="${project.artifactId}-${project.version}">
+    <repository>mvn:${project.groupId}/onos-app-tenbi-yangmodel/${project.version}/xml/features</repository>
+    <feature name="${project.artifactId}" version="${project.version}"
+             description="${project.description}">
+        <feature>onos-api</feature>
+        <feature>onos-app-tenbi-yangmodel</feature>
+        <bundle>mvn:${project.groupId}/${project.artifactId}/${project.version}</bundle>
+        <bundle>mvn:${project.groupId}/onos-restsb-api/${project.version}</bundle>
+        <bundle>mvn:${project.groupId}/onos-restsb-ctl/${project.version}</bundle>
+        <bundle>mvn:org.glassfish.jersey.core/jersey-client/2.22.2</bundle>
+        <bundle>mvn:commons-io/commons-io/2.4</bundle>
+        <bundle>mvn:org.apache.httpcomponents/httpclient-osgi/4.5.1</bundle>
+        <bundle>mvn:org.apache.httpcomponents/httpcore-osgi/4.4.4</bundle>
+        <bundle>mvn:${project.groupId}/onos-app-tetopology/${project.version}</bundle>
+        <bundle>mvn:${project.groupId}/onos-app-yms-api/${project.version}</bundle>
+        <bundle>mvn:${project.groupId}/onos-app-tenbi-utils/${project.version}</bundle>
+    </feature>
+</features>
+