Fixing javadoc warnings and package grouping.

Change-Id: I6bf0d9e66c27cd1fad1cd0a83491e33939bd7875
diff --git a/docs/internal-core b/docs/internal-core
index 8f24282..39b42da 100644
--- a/docs/internal-core
+++ b/docs/internal-core
@@ -1,7 +1,27 @@
-*.impl
-*.impl.*
-
+org.onosproject.cfg.impl
+org.onosproject.cluster.impl
+org.onosproject.core.impl
+org.onosproject.event.impl
+org.onosproject.net.config.impl
+org.onosproject.net.device.impl
+org.onosproject.net.driver.impl
+org.onosproject.net.edgeservice.impl
+org.onosproject.net.flow.impl
+org.onosproject.net.flowobjective.impl
+org.onosproject.net.flowobjective.impl.composition
+org.onosproject.net.group.impl
+org.onosproject.net.host.impl
+org.onosproject.net.intent.impl
+org.onosproject.net.intent.impl.compiler
+org.onosproject.net.intent.impl.phase
+org.onosproject.net.link.impl
+org.onosproject.net.newresource.impl
+org.onosproject.net.packet.impl
+org.onosproject.net.proxyarp.impl
+org.onosproject.net.resource.impl
+org.onosproject.net.statistic.impl
+org.onosproject.net.topology.impl
 org.onosproject.json
 org.onosproject.json.*
-:org.onosproject.common.*
-org.onosproject.security.*
+org.onosproject.common.*
+org.onosproject.security.impl