fix: try to speed-up build

Author: bednar

.travis.yml

@@ -41,6 +41,7 @@ install:
     - pip install tox-travis
     - pip install setuptools
     - pip install coveralls
+    - pip list
     - mkdir -p "influxdb_install/${INFLUXDB_VER}"
     - if [ -n "${INFLUXDB_VER}" ] ; then wget "https://dl.influxdata.com/influxdb/releases/influxdb_${INFLUXDB_VER}_amd64.deb" ; fi
     - if [ -n "${INFLUXDB_VER}" ] ; then dpkg -x influxdb*.deb "influxdb_install/${INFLUXDB_VER}" ; fi