Bumping version of onos-maven-plugin to 1.11-SNAPSHOT.

Moving ONOS dependency to be on release version 1.10.
Cleaned up a few pom.xml files from redundant plugin configuration.

Change-Id: I9cc31731dc26dd97292911f9a64795f2865e386d
diff --git a/tools/package/maven-plugin/pom.xml b/tools/package/maven-plugin/pom.xml
index dc003cc..8c770cf 100644
--- a/tools/package/maven-plugin/pom.xml
+++ b/tools/package/maven-plugin/pom.xml
@@ -25,7 +25,7 @@
 
     <groupId>org.onosproject</groupId>
     <artifactId>onos-maven-plugin</artifactId>
-    <version>1.10</version>
+    <version>1.11-SNAPSHOT</version>
     <packaging>maven-plugin</packaging>
 
     <description>Maven plugin for packaging ONOS applications or generating