Fixes geerlingguy#50: CentOS sometimes fails downloading installer du…

…e to url lookup plugin.

Merge pull request geerlingguy#48 from B-Galati/fix-40

Add signature checksum for installer

PR geerlingguy#43 follow-up: Use include_tasks instead of import_task…

…s due to when conditions.

Merge pull request geerlingguy#32 from joestewart/feature/composer-pr…

…oject-path

Use path specified in composer_project_path.

PR geerlingguy#31 follow-up: Task value ordering cleanup.

Add automated test support for Fedora 24.

Better idempotence test plus fix build failure.

Merge pull request geerlingguy#25 from geerlingguy/docker-role-tests

Update tests using Docker for cross-platform PHP 7 testing.

Issue geerlingguy#21: Fix deprecation warning in Ansible 2.x.

Merge pull request geerlingguy#16 from alsar/composer-version

Added variable to specify installed composer version