Add Travis job to check sync with canonical data (#1849)
Add Travis job to check sync with canonical data (#1849)

* Add Travis job to check sync with canonical data

* disable flake8 in CANONICAL_SYNC job

* install requests package in job

smalley/python,jmluy/xpython,behrtam/xpython,exercism/xpython,exercism/python,jmluy/xpython,exercism/xpython,behrtam/xpython,exercism/python,smalley/python