various changes to templates in order to support unrolls

...narch/gluongenerator/CNNArch2GluonTemplateController.java

src/main/resources/templates/gluon/CNNCreator.ftl

src/main/resources/templates/gluon/CNNNet.ftl

src/main/resources/templates/gluon/CNNSupervisedTrainer.ftl

...in/resources/templates/gluon/elements/BeamSearchStart.ftl

...n/resources/templates/gluon/elements/BeamSearchStartx.ftl

src/main/resources/templates/gluon/elements/Embedding.ftl

...ain/resources/templates/gluon/elements/FullyConnected.ftl

src/main/resources/templates/gluon/elements/GreedySearch.ftl

src/main/resources/templates/gluon/elements/Softmax.ftl

src/main/resources/templates/gluon/execute.ftl

src/main/resources/templates/gluon/pythonExecute.ftl

...est/resources/target_code/CNNSupervisedTrainer_Alexnet.py

...arget_code/CNNSupervisedTrainer_CifarClassifierNetwork.py

src/test/resources/target_code/CNNSupervisedTrainer_VGG16.py

src/test/resources/valid_tests/RNNencdec.cnna