[WIP] Trying to fix CI.

[jmchilton]

Tool installs seem to be broken under Python 3 - xref #1005

wf_step is [{'annotation': '', 'content_id': 'toolshed.g2.bx.psu.edu/repos/bgruening/text_processing/tp_head_tool/1.1.0', 'errors': 'Tool is not installed', 'id': 6, 'input_connections': {'infile': {'id': 5, 'output_name': 'output'}}, 'inputs': [], 'label': None, 'name': 'toolshed.g2.bx.psu.edu/repos/bgruening/text_processing/tp_head_tool/1.1.0', 'outputs': [], 'position': {'left': 863.5, 'top': 410}, 'post_job_actions': {}, 'tool_id': 'toolshed.g2.bx.psu.edu/repos/bgruening/text_processing/tp_head_tool/1.1.0', 'tool_state': '{"__page__": null, "__rerun_remap_job_id__": null, "complement": "\\"\\"", "count": "\\"10\\"", "infile": "{\\"__class__\\": \\"ConnectedValue\\"}"}', 'tool_version': '1.1.0', 'type': 'tool', 'uuid': '732d789d-e3e2-4d5e-bd28-257e6be0602b', 'workflow_outputs': []}]