Fixed getFeatureManager method

components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/operation/mgt/Operation.java

@@ -29,7 +29,7 @@ public class Operation {
 		CONFIG, MESSAGE, INFO, COMMAND
 	}
     public enum OperationStatuses {
-        INPROGRES,PENDING,COMPLETED,ERROR
+        INPROGRESS,PENDING,COMPLETED,ERROR
     }
 
 	private String code;

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementServiceImpl.java

@@ -83,7 +83,7 @@ public class DeviceManagementServiceImpl implements DeviceManagementService {
     }
 
     public FeatureManager getFeatureManager(String type) throws DeviceManagementException {
-        return null;
+        return DeviceManagementDataHolder.getInstance().getDeviceManagementProvider().getFeatureManager(type);
     }
 
     @Override