Use versions-maven-plugin 2.3 to avoid NPE while setting project version

Change-Id: I9080a9f46193c1dea4a9ef6856d2899fe960b7e9
(cherry picked from commit e7b9db54a5)

pom.xml

                     <artifactId>exec-maven-plugin</artifactId>
                     <version>1.4.0</version>
                 </plugin>
+                <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>versions-maven-plugin</artifactId>
+                    <version>2.3</version>
+                </plugin>
                 <plugin>
                     <groupId>org.codehaus.mojo</groupId>
                     <artifactId>build-helper-maven-plugin</artifactId>