Yan 852

[awicenec]

Added support for applicationParams and fixed a few things in addition along the way:

1. applicationParams are now parsed and appended to both bash, MPI and docker command lines
2. Default prefix for parameters is '--' for parameters with a single letter name this is changed to '-' instead.
3. Input and output redirects have been added to the engine code to the start and end of the final command line
4. The original command line parameters and the really old Arg%0d arguments are still working
5. daliuge-engine inside a container is now started with the same user starting the container, rather than root. Fixes the annoying issue that files generated during run-time by the engine are owned by root and can't be removed without root permission.
6. Removed a heap of code from pg_generator on the way as well. This part of the code can be further improved and stream-lined. The issue is that pg_generator is performing a lot of logic on parameters of drops, but all of that should be done in the engine only.

[coveralls]

Coverage decreased (-12.8%) to 66.739% when pulling bda8081 on yan-852 into f92b8ba on master.

[coveralls]

Coverage decreased (-0.06%) to 79.503% when pulling a91cdbc on yan-852 into f92b8ba on master.

[james-strauss-uwa]

Approved pending removal of shared objects from strip-docker-image-1164389/