Re-enable integration tests.

[ubschmidt2]

Fixes #557.

[codecov-io]

Codecov Report

Merging #563 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #563   +/-   ##
=========================================
  Coverage     90.02%   90.02%           
  Complexity      571      571           
=========================================
  Files           110      110           
  Lines          2366     2366           
  Branches        212      212           
=========================================
  Hits           2130     2130           
  Misses          179      179           
  Partials         57       57

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[bogdandrutu]

Tested locally and does seem to work.