Add version for tycho-versions-plugin

Author: adangel

pom.xml

@@ -206,6 +206,11 @@
           <artifactId>tycho-p2-extras-plugin</artifactId>
           <version>${tycho.version}</version>
         </plugin>
+        <plugin>
+          <groupId>org.eclipse.tycho</groupId>
+          <artifactId>tycho-versions-plugin</artifactId>
+          <version>${tycho.version}</version>
+        </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-checkstyle-plugin</artifactId>