Active health check in device simulator. (#586)

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

examples/hawkbit-device-simulator/pom.xml

@@ -91,6 +91,10 @@
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter</artifactId>
       </dependency>
+      <dependency>
+         <groupId>org.springframework.boot</groupId>
+         <artifactId>spring-boot-starter-actuator</artifactId>
+      </dependency>
       <dependency>
          <groupId>com.vaadin</groupId>
          <artifactId>vaadin-spring-boot-starter</artifactId>