[MJAVADOC-760] declare test dependencies (#217)

Author: elharo

pom.xml

@@ -329,6 +329,18 @@ under the License.
       <version>4.13.2</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.hamcrest</groupId>
+      <artifactId>hamcrest-core</artifactId>
+      <version>1.3</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>javax.servlet</groupId>
+      <artifactId>javax.servlet-api</artifactId>
+      <version>3.1.0</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.apache.maven.plugin-testing</groupId>
       <artifactId>maven-plugin-testing-harness</artifactId>
@@ -355,7 +367,7 @@ under the License.
     </dependency>
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
-      <artifactId>jetty-client</artifactId>
+      <artifactId>jetty-util</artifactId>
       <version>${jetty.version}</version>
       <scope>test</scope>
     </dependency>