Fixes geerlingguy#90, geerlingguy#89, geerlingguy#68, geerlingguy#34:…

… Add note for root password issues and document sudo requirement.

Merge pull request geerlingguy#84 from oxyc/docker

Issue geerlingguy#77: Add docker based tests

Ansible version bump.

Fixes geerlingguy#59: Ansible 2.x role cleanup.

Fixes geerlingguy#52: Remove deprecated log_slow_queries variable fro…

…m template.

Merge pull request geerlingguy#78 from caspark/master

Set pidfile even when not running via mysqld_safe

PR geerlingguy#76 follow-up: Clean up defaults examples.

Merge pull request geerlingguy#74 from BlackMesh/mysql-python-order

reversed order of mysql-python install

Merge pull request geerlingguy#70 from caseycs/adjustable_connection_…

…count

PR geerlingguy#70: Make connection count adjustable.

Small fix for previous MySQL PR merge on Ansible 2.