renaming

...c/main/java/titan/ccp/aggregation/AggregationService.java

...ion/src/main/java/uc2/application/AggregationService.java

...tion/src/main/java/uc2/application/ConfigurationKeys.java

...in/java/uc2/streamprocessing/ChildParentsTransformer.java

.../uc2/streamprocessing/ChildParentsTransformerFactory.java

.../main/java/uc2/streamprocessing/JointFlatTransformer.java

...ava/uc2/streamprocessing/JointFlatTransformerFactory.java

...rc/main/java/uc2/streamprocessing/JointRecordParents.java

...c/main/java/uc2/streamprocessing/KafkaStreamsBuilder.java

.../main/java/uc2/streamprocessing/OptionalParentsSerde.java

...tion/src/main/java/uc2/streamprocessing/ParentsSerde.java

.../src/main/java/uc2/streamprocessing/RecordAggregator.java

...n/src/main/java/uc2/streamprocessing/SensorParentKey.java

.../main/java/uc2/streamprocessing/SensorParentKeySerde.java

...n/src/main/java/uc2/streamprocessing/TopologyBuilder.java

...ggregation/streamprocessing/OptionalParentsSerdeTest.java

...an/ccp/aggregation/streamprocessing/ParentsSerdeTest.java

...ggregation/streamprocessing/SensorParentKeySerdeTest.java

...enerator/src/main/java/kafkaSender/KafkaRecordSender.java

.../src/main/java/uc2/workloadGenerator/ConfigPublisher.java