Enable travis tests for python 3.7 and 3.8

Signed-off-by: Francesco De Martino <[email protected]>

Author: demartinofra

.travis.yml

@@ -3,6 +3,8 @@ language: python
 python:
   - "3.5"
   - "3.6"
+  - "3.7"
+  - "3.8"
 
 install:
   - pip install tox-travis

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{35,36,37}
+    py{35,36,37,38}
     code-linters
 
 # Default testenv. Used to run tests on all python versions.
@@ -9,7 +9,7 @@ passenv = CI TRAVIS_BUILD_ID TRAVIS TRAVIS_BRANCH TRAVIS_JOB_NUMBER TRAVIS_PULL_
 whitelist_externals =
     bash
 deps =
-    py{35,36,37}: -rtests/requirements.txt
+    -r tests/requirements.txt
 commands =
     bash ./tests/test.sh
     python -m unittest discover -s tests/jobwatcher -p "*tests.py"