Add step to clear cache in circleCI

The builds are only passing when building without cache

Author: machadoit

circle.yml

@@ -8,9 +8,10 @@ dependencies:
     - sudo pip install pyflakes
     - sudo pip install coverage
     - sudo pip install virtualenv==12.0.2
+    - rm -r ~/.gradle
 
 test:
   override:
     - make test-all
     - make install
-    - make coverage
+    - make coverage