Continued resolution of issue 30 Dockerized Web Service

[x] Although one can input a (partial) TRAPI and Biolink Model SemVer version into the SRI Testing framework, communicating the selected version bindings back in the results is not as transparent as desirable.
[ ] The Pytest reporting on this PR still requires more refinement to be more informative. This will require a bit more sophisticated parameterization of Pytest plus some additional intelligent parsing of the STDOUT / STDERR output streams of the Pytests.
[ ] Not sure what the Pytest report caching policy and strategy should be behind the web service. It is currently just persisting reports in memory (this might take up too much space... might wish to the a FIFO policy with a shallow cache, using the UID to store older tests to the local hard disk?)

TranslatorSRI / SRI_testing