Add playbook for simple upgrades of distro packages

[manics]

Runs yum update on all hosts in the inventory (all is an ansible keyword meaning all hosts).

[joshmoore]

TASK [upgrade-distpackages : system packages | upgrade] ************************
[DEPRECATION WARNING]: Using bare variables is deprecated. Update your playbooks so that the environment value uses the full variable syntax ('{{upgrade_distpackages}}'). This
feature will be removed in a future release. Deprecation warnings can be disabled by setting deprecation_warnings=False in ansible.cfg.

If that's not a worry, I'd say merge as an independent playbook.

[manics]

Looks like https://github.com/manics/infrastructure/blob/47bff976019729a9f9cd9732353ad14ede5049f1/ansible/roles/upgrade-distpackages/tasks/main.yml#L9 needs to be {{ upgrade_distpackages }}. Issue added: #55

[joshmoore]

👍