test_bump pytest version

Author: circa10a

.travis.yml

@@ -1,6 +1,6 @@
 language: python
 python:
-  - 3.7
+  - 3.6
 services:
   - docker
 

requirements-dev.txt

@@ -2,7 +2,7 @@ docker
 schedule
 prometheus_client
 requests
-pytest
+pytest>=3.6
 pytest-cov
 pytest-mock
 codecov

setup.py

@@ -9,7 +9,7 @@
                     'schedule',
                     'prometheus_client',
                     'requests',
-                    'pytest'
+                    'pytest >= 3.6')'
                     'pytest-cov',
                     'pytest-mock',
                     'codecov',