Verify all download URLs generated by SP-server (e.g. DDI and DMF API)

- the get artifact request for the DDI API know contains https links
- additional there where http links added
- section for creating download urls based on patters was moved to hawkbit-core
- tests where adapted and extended

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

hawkbit-rest-resource/pom.xml

@@ -25,6 +25,11 @@
          <groupId>org.eclipse.hawkbit</groupId>
          <artifactId>hawkbit-repository</artifactId>
          <version>${project.version}</version>
+      </dependency>
+       <dependency>
+         <groupId>org.eclipse.hawkbit</groupId>
+         <artifactId>hawkbit-core</artifactId>
+         <version>${project.version}</version>
       </dependency>
       <dependency>
          <groupId>org.eclipse.hawkbit</groupId>