create default variables, first step for ubuntu support

defaults/main.yml

@@ -1,4 +1,6 @@
 ---
 # webserver_dehydrated_email: "" # required
-webserver_php_enabled: False
 webserver_tls_enabled: True
+webserver_php_enabled: False
+webserver_php_ini: /etc/php/php.ini
+webserver_php_service: "php-fpm.service"

tasks/php.yml

@@ -13,7 +13,7 @@
 - name: enable extension
   notify: restart php-fpm
   lineinfile:
-    path: /etc/php/php.ini
+    path: '{{ webserver_php_ini }}'
     regexp: ';extension={{ item }}'
     line: "extension={{ item }}"
   with_items:
@@ -32,7 +32,7 @@
 
 - name: enabled and started php-fpm
   systemd:
-    name: php-fpm
+    name: "{{ webserver_php_service }}"
     enabled: yes
     state: started