Flappy Jenkins test

[jvivian]

Non-deterministic error arises during builds that is unrelated to the actual tests passing. Most likely a retry/backoff needs to be implemented during retrieval of data from Quay's API (assumedly).

WARNING:__main__:Tool toil-grafana does not exist in cgl-docker-lib. Skipping...
Traceback (most recent call last):
  File "./jenkins.py", line 262, in <module>
    main()
  File "./jenkins.py", line 227, in main
    updated_tools = get_updated_tools(repos)
  File "./jenkins.py", line 45, in get_updated_tools
    json_data = json.loads(response.text)
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    obj, end = self.scan_once(s, idx)
ValueError: Unterminated string starting at: line 1 column 506112 (char 506111)
Build step 'Execute shell' marked build as failure
Finished: FAILURE