Remove duplicate test util classes

Signed-off-by: SirWayne <dennis.melzer@bosch-si.com>

hawkbit-rest-core/pom.xml

@@ -55,5 +55,31 @@
          <artifactId>allure-junit-adaptor</artifactId>
          <scope>test</scope>
       </dependency>
+       <dependency>
+         <groupId>org.springframework.boot</groupId>
+         <artifactId>spring-boot-starter-test</artifactId>
+         <scope>test</scope>
+      </dependency>
+       <dependency>
+         <groupId>org.json</groupId>
+         <artifactId>json</artifactId>
+         <scope>test</scope>
+      </dependency>
    </dependencies>
+
+   <build>
+      <plugins>
+         <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-jar-plugin</artifactId>
+            <executions>
+               <execution>
+                  <goals>
+                     <goal>test-jar</goal>
+                  </goals>
+               </execution>
+            </executions>
+         </plugin>
+      </plugins>
+   </build>
 </project>