Use Ansible's version_compare() filter

[oguya]

Instead of doing integer comparisons on strings, we should use Ansible's version_compare() filter.

For example: Run a task on Ubuntu 14.04 hosts only

• the old way; using strings

  when: ansible_distribution_version == '14.04'

• using version_compare()

  when: ansible_distribution_version | version_compare('14.04', '==')

https://docs.ansible.com/ansible/playbooks_tests.html#version-comparison