pip: name=argparse state=latest
- name: install networkx
- pip: name=networkx state=latest
+ pip: name=networkx version=1.11
- name: install six
pip: name=six state=latest
pip: name=oslo.config state=latest
- name: install pytest
- pip: name=pytest state=latest
+ pip: name=pytest version=4.6.4
- name: install Flask
pip: name=Flask state=latest