Fix message sending to cloud service

cloud/src/main/java/com/fogcomputing/CloudService.java

cloud/target/classes/com/fogcomputing/CloudService.class

common/src/main/java/com/fogcomputing/SensorData.java

common/src/main/java/com/fogcomputing/SensorDataBatch.java

common/target/classes/com/fogcomputing/SensorData.class

common/target/classes/com/fogcomputing/SensorDataBatch.class

edge/src/main/java/com/fogcomputing/EdgeService.java

edge/src/main/java/com/fogcomputing/MessageSender.java