Integration dataClay HPC scripts with COMPSs and tracing

[dgasull]

Create a demo that integrates all the components. Related to #2

[dgasull]

Also need to create two demos (one for javaclay and one for pyclay) in dockers. So, following demos will be implemented:

• singularity/hellopeople-java demo using singularity
• singularity/hellopeople-python demo using singularity
• hpc/hellopeople-java a SLURM job using dataclay-orchestration scripts
• hpc/hellopeople-python a SLURM job using dataclay-orchestration scripts
• hpc/hellopeople-pycompss using enqueue_compss
• wordcount-java-compss with tracing also (currently implemented without tracing)
• wordcount-python-compss with and without tracing also