[Java] Upgrade to Mockito 2.2.9.

Author: mjpt777

build.gradle

@@ -120,7 +120,7 @@ subprojects {
 
         testCompile 'org.hamcrest:hamcrest-all:1.3'
         testCompile 'junit:junit:4.12'
-        testCompile 'org.mockito:mockito-core:1.10.19'
+        testCompile 'org.mockito:mockito-core:2.2.9'
         testCompile 'com.google.code.gson:gson:2.3.1'
     }
 

sbe-tool/src/test/java/uk/co/real_logic/sbe/generation/java/CompositeElementsGenerationTest.java

@@ -45,10 +45,9 @@
 import static org.hamcrest.Matchers.not;
 import static org.hamcrest.Matchers.containsString;
 import static org.junit.Assert.assertThat;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.eq;
-import static org.mockito.Mockito.inOrder;
-import static org.mockito.Mockito.mock;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.*;
 
 public class CompositeElementsGenerationTest
 {