Set COVERAGE for all environments

Author: mbillingr

.travis.yml

@@ -14,19 +14,21 @@ env:
       NUMPY_VERSION="1.8.0" SCIPY_VERSION="0.13.3"
       SKLEARN_VERSION="0.15.0" MATPLOTLIB_VERSION="1.4.0"
       INSTALL_SCOT="true" RUN_EXAMPLES="false"
+      COVERAGE="false"
 
     # This environment tests Python 2 support
     - DISTRIB="conda" PYTHON_VERSION="2.7" USE_MKL="true"
       NUMPY_VERSION="1.10.4" SCIPY_VERSION="0.17.0"
       SKLEARN_VERSION="0.17.0" MATPLOTLIB_VERSION="1.5.1"
       INSTALL_SCOT="true" RUN_EXAMPLES="false"
+      COVERAGE="false"
 
     # This environment tests Python 3 support
     - DISTRIB="conda" PYTHON_VERSION="3.5" USE_MKL="true"
       NUMPY_VERSION="1.10.4" SCIPY_VERSION="0.17.0"
       SKLEARN_VERSION="0.17.0" MATPLOTLIB_VERSION="1.5.1"
-      COVERAGE="true"
       INSTALL_SCOT="true" RUN_EXAMPLES="false"
+      COVERAGE="true"
 
 install: source distributions/ci/install.sh