Merge pull request #377 from tseaver/fail-coverage_lt_100_pct

Fail if coverage < 100%.

Author: tseaver

tox.ini

@@ -23,7 +23,7 @@ deps =
 basepython =
     python2.7
 commands =
-    nosetests --with-xunit --with-xcoverage --cover-package=gcloud --nocapture --cover-erase --cover-tests --cover-branches
+    nosetests --with-xunit --with-xcoverage --cover-package=gcloud --nocapture --cover-erase --cover-tests --cover-branches --cover-min-percentage=100
 deps =
     nose
     unittest2