Revert "changed datamodel, integrated poll configuration into tenant meta data table"

This reverts commit 9d147aada710cc2333723604fa8893e4f2f0515f.

Signed-off-by: Nonnenmacher Fabian <fabian.nonnenmacher@bosch-si.com>

Conflicts:
	hawkbit-core/src/main/java/org/eclipse/hawkbit/ControllerPollProperties.java
	hawkbit-repository/src/main/java/org/eclipse/hawkbit/repository/model/TenantMetaData.java

hawkbit-core/src/main/java/org/eclipse/hawkbit/ControllerPollProperties.java

@@ -13,6 +13,8 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 /**
  * Defines the polling time for the controllers in HH:MM:SS notation.
  * 
+ *
+ *
  */
 
 @ConfigurationProperties(prefix = "hawkbit.controller")
@@ -54,4 +56,5 @@ public class ControllerPollProperties {
     public void setMinPollingTime(String minPollingTime) {
         this.minPollingTime = minPollingTime;
     }
+
 }