Depend on released maven-plugin

Change-Id: Ia061db0168a0de967cb402e5cdeb4ab39ee67a0d
diff --git a/pom.xml b/pom.xml
index aa32f6a..8c65299 100644
--- a/pom.xml
+++ b/pom.xml
@@ -534,7 +534,7 @@
                 <plugin>
                     <groupId>org.onosproject</groupId>
                     <artifactId>onos-maven-plugin</artifactId>
-                    <version>${project.version}</version>
+                    <version>1.1.0</version>
                     <executions>
                         <execution>
                             <phase>generate-resources</phase>