add hamcrest-core as default test dependency

Author: stefanseifert

parent_toplevel/pom.xml

@@ -104,6 +104,11 @@
       <artifactId>mockito-core</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.hamcrest</groupId>
+      <artifactId>hamcrest-core</artifactId>
+      <scope>test</scope>
+    </dependency>
 
   </dependencies>  
   <dependencyManagement>