Created hawkbit-ddi-api maven module and resource interfaces for the module

Signed-off-by: Jonathan Philip Knoblauch <JonathanPhilip.Knoblauch@bosch-si.com>

hawkbit-rest-resource/pom.xml

@@ -1,13 +1,6 @@
-<!--
-
-    Copyright (c) 2015 Bosch Software Innovations GmbH and others.
-
-    All rights reserved. This program and the accompanying materials
-    are made available under the terms of the Eclipse Public License v1.0
-    which accompanies this distribution, and is available at
-    http://www.eclipse.org/legal/epl-v10.html
-
--->
+<!-- Copyright (c) 2015 Bosch Software Innovations GmbH and others. All rights reserved. This program and the accompanying 
+   materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and 
+   is available at http://www.eclipse.org/legal/epl-v10.html -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
@@ -26,7 +19,7 @@
          <artifactId>hawkbit-repository</artifactId>
          <version>${project.version}</version>
       </dependency>
-       <dependency>
+      <dependency>
          <groupId>org.eclipse.hawkbit</groupId>
          <artifactId>hawkbit-core</artifactId>
          <version>${project.version}</version>
@@ -36,6 +29,11 @@
          <artifactId>hawkbit-rest-api</artifactId>
          <version>${project.version}</version>
       </dependency>
+      <dependency>
+         <groupId>org.eclipse.hawkbit</groupId>
+         <artifactId>hawkbit-ddi-api</artifactId>
+         <version>${project.version}</version>
+      </dependency>
       <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>