Update to latest galaxy-lib.

[jmchilton]

Includes:

• Updates to target newer cwltool (Add support for cwltool 1.0.20180611202326 galaxy-lib#129 / Fixes galaxy-lib#134 / galaxyproject/galaxy-lib@c68f729).
• Galaxy collection syntax for workflow testing code (Add support for explicit Galaxy-style collections as test inputs. galaxy-lib#120).
• Support for filetype testing in workflow testing code (add filetype support to the workflow-job.yml test script galaxy-lib#119).
• Support for using URIs when testing workflows (Allow URIs in test data inputs. galaxy-lib#118).
• Mulled update to make make --test optional for involucro (Makes --test optional for involucro galaxy-lib#130).
• Report a lint error if test output name does not match tool outputs (Report a lint error if test output name does not match tool outputs galaxy-lib#128).
• Support passing a name through to the lint context so that error messages can be more useful (Support passing a name through to the lint context so that error messages can be more useful galaxy-lib#121).
• Library support for parsing CWL SoftwareRequirements as Galaxy requirements (Rough pass at parsing CWL software requirements to Galaxy requirements. galaxy-lib#115).
• Fix for docker logs command generation (Fix for docker_util logs_command used by Planemo. galaxy-lib#113).

[jmchilton]

Needs galaxyproject/galaxy-lib#134 now also. (Added).

[nsoranzo]

@jmchilton Should we get galaxyproject/galaxy-lib#132 and galaxyproject/galaxy-lib#136 merged in the release_18.09 branch ASAP?