Add mysql_supports_innodb_large_prefix variable

Author: JvE

tasks/variables.yml

@@ -52,3 +52,8 @@
   set_fact:
     mysql_socket: "{{ __mysql_socket }}"
   when: mysql_socket is not defined
+
+- name: Define mysql_supports_innodb_large_prefix.
+  set_fact:
+    mysql_supports_innodb_large_prefix: "{{ __mysql_supports_innodb_large_prefix }}"
+  when: mysql_supports_innodb_large_prefix is not defined