Description of problem:
Ansible shipped in rhel-7-server-extras-beta-rpms ships with a version of ansible-galaxy where the --force flag does not work for updating roles.

Version-Release number of selected component (if applicable):
ansible-2.3.0.0-4.el7.noarch

How reproducible:
Every time

Steps to Reproduce:
1. Create a requirements.yml file with a a git+<url> style source. For example:
---
- name: apache
  src: git+https://github.com/geerlingguy/ansible-role-apache.git
  version: master
...
2. Run `ansible-galaxy install --roles-path ./roles --role-file requirements.yml --force -vvvv`
3. Update the master branch of the repo you specified (obviously difficult using someone elses repo, but you get my point)
4. Run the same command again (with --force)

Actual results:
Using /etc/ansible/ansible.cfg as config file
Opened /home/hvindin/.ansible_galaxy
found role {'scm': 'git', 'src': 'https://github.com/geerlingguy/ansible-role-apache.git', 'version': 'master', 'name': 'apache'} in yaml file
Installing role apache 
- apache (master) is already installed, skipping.

Expected results:
Using /etc/ansible/ansible.cfg as config file
Opened /home/hvindin/.ansible_galaxy
found role {'scm': 'git', 'src': 'https://github.com/geerlingguy/ansible-role-apache.git', 'version': 'master', 'name': 'apache'} in yaml file
Installing role apache 
- extracting apache to ./roles/apache
- apache (master) was installed successfully

Additional info:
Force seems like it should override the existing file rather than just leaving it as is.

This is fixed in:
https://github.com/ansible/ansible/pull/23391

One of the better bug reports is here:
https://github.com/ansible/galaxy-issues/issues/249