Merge pull request #1257 from napalm-automation/dependabot/pip/tox-3.17.1

Bump tox from 3.16.1 to 3.17.1

Author: mirceaulinic

requirements-dev.txt

@@ -8,4 +8,4 @@ pytest-json==0.4.0
 pytest-pythonpath==0.7.3
 pylama==7.7.1
 mock==4.0.2
-tox==3.16.1
+tox==3.17.1