Remove docker_restart_on_package_change option to correct warning; fixes

 geerlingguy#79

README.md

@@ -17,11 +17,7 @@ Available variables are listed below, along with default values (see `defaults/m
     docker_package: "docker-{{ docker_edition }}"
     docker_package_state: present
 
-The `docker_edition` should be either `ce` (Community Edition) or `ee` (Enterprise Edition). You can also specify a specific version of Docker to install using a format like `docker-{{ docker_edition }}-<VERSION>`. And you can control whether the package is installed, uninstalled, or at the latest version by setting `docker_package_state` to `present`, `absent`, or `latest`, respectively.
-
-    docker_restart_on_package_change: True
-
-Whether to restart the Docker daemon after the Docker package is installed or updated. If this is set to `True`, this role will flush all handlers (run any of the handlers that have been notified by this and any other role up to this point in the play). The default setting helps avoid firewall clashes with Docker rules (e.g. when using custom `iptables` rules or the `geerlingguy.firewall` Ansible role).
+The `docker_edition` should be either `ce` (Community Edition) or `ee` (Enterprise Edition). You can also specify a specific version of Docker to install using a format like `docker-{{ docker_edition }}-<VERSION>`. And you can control whether the package is installed, uninstalled, or at the latest version by setting `docker_package_state` to `present`, `absent`, or `latest`, respectively. Note that the Docker daemon will be automatically restarted if the Docker package is updated. This is a side effect of flushing all handlers (running any of the handlers that have been notified by this and any other role up to this point in the play).
 
     docker_service_state: started
     docker_service_enabled: yes

defaults/main.yml

@@ -3,7 +3,6 @@
 docker_edition: 'ce'
 docker_package: "docker-{{ docker_edition }}"
 docker_package_state: present
-docker_restart_on_package_change: True
 
 # Service options.
 docker_service_state: started

tasks/main.yml

@@ -19,7 +19,6 @@
 
 - name: Ensure handlers are notified now to avoid firewall conflicts.
   meta: flush_handlers
-  when: docker_restart_on_package_change
 
 - include_tasks: docker-compose.yml
   when: docker_install_compose