Refine application title and category in app.xml and pom.xml

- Remove ONOS keyword from application title
- Capitalize each keyword in application title
- Make it consistent to use App, Provider and Driver in
  application title
- Add right category name for each application
- Add missing application title and category
- Make application category comment more descriptive

Change-Id: Ib886b4a4293c38bd546a4107b20569f1bd7031a7
diff --git a/pom.xml b/pom.xml
index 90759d8..aafa5a7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -34,7 +34,7 @@
     <properties>
         <onos.app.name>org.onosproject.igmp</onos.app.name>
         <onos.app.title>IGMP App</onos.app.title>
-        <onos.app.category>default</onos.app.category>
+        <onos.app.category>Traffic Steering</onos.app.category>
         <onos.app.url>http://onosproject.org</onos.app.url>
         <onos.app.readme>IGMP implementation.</onos.app.readme>
     </properties>