Few improvements(#33)

* README update
* Remove useless legacy files
* Small refactoring for Galera Cluster
* Modern Ansible
* Some changes on travis + Vagrant
* Help debug: display all facts
* Fix galera config for docker

tasks/galera/bootstrap.yml

@@ -1,9 +1,11 @@
 ---
-- set_fact:
-    booboo: "{{ mariadb_datadir }}/.ansible_galera_boostrap"
+- name: SET_FACT | Prepare mark var
+  set_fact:
+    __mark: "{{ mariadb_datadir }}/.ansible_galera_boostrap"
 
 - name: STAT | Bootstrap mark
-  stat: path={{ booboo }}
+  stat:
+    path: "{{ __mark }}"
   register: s
 
 - block:
@@ -12,7 +14,9 @@
         mariadb_notify_restart: false
 
     - name: SERVICE | Stop MariaDB
-      service: name=mysql state=stopped
+      service:
+        name: mysql
+        state: stopped
 
     - name: COMMAND | Bootstrap first node (systemd)
       command: galera_new_cluster
@@ -29,6 +33,6 @@
   when: not s.stat.exists or mariadb_galera_resetup
 
 - name: COMMAND | Create Bootstrap mark
-  command: "touch {{ booboo }}"
+  command: "touch {{ __mark }}"
   args:
-    creates: "{{ booboo }}"
+    creates: "{{ __mark }}"

tasks/galera/main.yml

@@ -7,18 +7,18 @@
   register: galeraconfig
 
 - name: INCLUDE | Bootstrap first node
-  include: 'bootstrap.yml'
+  import_tasks: 'bootstrap.yml'
   when: inventory_hostname == mariadb_galera_primary_node
 
 - name: INCLUDE | Configure other nodes
-  include: 'nodes.yml'
+  import_tasks: 'nodes.yml'
   when: inventory_hostname != mariadb_galera_primary_node
 
 - name: SERVICE | Restart MariaDB if needed
   service:
     name: mysql
     state: restarted
-  when: >
+  when:
     ((galeraconfig or (p is defined and p.changed)) and
     (bootstrap_run is not defined)) or
     ((inventory_hostname != mariadb_galera_primary_node) and