Fixing javadoc configuration and adding some package documentation.

Change-Id: Ibeb58b954b1d5ed1939a70afda3f5523807cee23
diff --git a/docs/external.xml b/docs/external.xml
index 9ff356e..8732746 100644
--- a/docs/external.xml
+++ b/docs/external.xml
@@ -49,7 +49,7 @@
                 <version>2.10.1</version>
                 <configuration>
                     <show>package</show>
-                    <excludePackageNames>org.onlab.thirdparty:*.impl:*.impl.*:org.onosproject.provider.*:org.onosproject.gui:org.onosproject.rest:org.onosproject.cli*:org.onosproject.tvue:org.onosproject.foo:org.onosproject.mobility:org.onosproject.proxyarp:org.onosproject.fwd:org.onosproject.ifwd:org.onosproject.optical:org.onosproject.config:org.onosproject.calendar:org.onosproject.sdnip*:org.onosproject.oecfg:org.onosproject.metrics:org.onosproject.store.*:org.onosproject.openflow.*:org.onosproject.common.*:org.onosproject.net.group.impl:org.onosproject.routing*</excludePackageNames>
+                    <excludePackageNames>org.onlab.thirdparty:*.impl:*.impl.*:org.onosproject.provider.*:org.onosproject.gui:org.onosproject.rest:org.onosproject.cli*:org.onosproject.tvue:org.onosproject.foo:org.onosproject.mobility:org.onosproject.proxyarp:org.onosproject.fwd:org.onosproject.ifwd:org.onosproject.optical:org.onosproject.config:org.onosproject.calendar:org.onosproject.sdnip*:org.onosproject.oecfg:org.onosproject.metrics:org.onosproject.store.*:org.onosproject.openflow.*:org.onosproject.common.*:org.onosproject.net.group.impl:org.onosproject.routing*:org.onosproject.bgprouter:org.onosproject.intentperf</excludePackageNames>
                     <docfilessubdirs>true</docfilessubdirs>
                     <doctitle>ONOS Java API</doctitle>
                     <groups>
diff --git a/docs/pom.xml b/docs/pom.xml
index 25b1180..80566a8 100644
--- a/docs/pom.xml
+++ b/docs/pom.xml
@@ -61,7 +61,7 @@
                         <group>
                             <title>Core Subsystems</title>
                             <packages>
-                                org.onosproject.impl:org.onosproject.core.impl:org.onosproject.cluster.impl:org.onosproject.net.device.impl:org.onosproject.net.link.impl:org.onosproject.net.host.impl:org.onosproject.net.topology.impl:org.onosproject.net.packet.impl:org.onosproject.net.flow.impl:org.onosproject.net.*.impl:org.onosproject.event.impl:org.onosproject.net.intent.impl:org.onosproject.net.proxyarp.impl:org.onosproject.mastership.impl:org.onosproject.net.resource.impl:org.onosproject.json:org.onosproject.json.*:org.onosproject.provider.host.impl:org.onosproject.provider.lldp.impl:org.onosproject.net.statistic.impl:org.onosproject.app.impl:org.onosproject.common.*:org.onosproject.net.group.impl
+                                org.onosproject.impl:org.onosproject.core.impl:org.onosproject.cluster.impl:org.onosproject.net.device.impl:org.onosproject.net.link.impl:org.onosproject.net.host.impl:org.onosproject.net.topology.impl:org.onosproject.net.packet.impl:org.onosproject.net.flow.impl:org.onosproject.net.*.impl:org.onosproject.event.impl:org.onosproject.net.intent.impl*:org.onosproject.net.proxyarp.impl:org.onosproject.mastership.impl:org.onosproject.net.resource.impl:org.onosproject.json:org.onosproject.json.*:org.onosproject.provider.host.impl:org.onosproject.provider.lldp.impl:org.onosproject.net.statistic.impl:org.onosproject.app.impl:org.onosproject.common.*:org.onosproject.net.group.impl
                             </packages>
                         </group>
                         <group>
@@ -99,7 +99,7 @@
                         <group>
                             <title>Sample Applications</title>
                             <packages>
-                                org.onosproject.tvue:org.onosproject.fwd:org.onosproject.ifwd:org.onosproject.mobility:org.onosproject.proxyarp:org.onosproject.foo:org.onosproject.calendar:org.onosproject.optical:org.onosproject.optical.*:org.onosproject.sdnip:org.onosproject.sdnip.*:org.onosproject.config:org.onosproject.routing:org.onosproject.routing*
+                                org.onosproject.tvue:org.onosproject.fwd:org.onosproject.ifwd:org.onosproject.mobility:org.onosproject.proxyarp:org.onosproject.foo:org.onosproject.calendar:org.onosproject.optical:org.onosproject.optical.*:org.onosproject.sdnip:org.onosproject.sdnip.*:org.onosproject.config:org.onosproject.routing:org.onosproject.routing*:org.onosproject.bgprouter:org.onosproject.intentperf
                             </packages>
                         </group>
                         <group>