Add wait and interactive timeout settings

The following new variables have been added:

If not set in host_vars or group file, they are not applied, so we don't need
to take care about the currently deployed VMs (they don't have both settings in
config file, so it is not used)

Sometimes the default (8h) values is not enough, for instance when storing a
big AIP in AM

defaults/main.yml

@@ -46,6 +46,10 @@ mysql_innodb_log_file_size: "64M"
 
 mysql_character_set_client_handshake: "FALSE"
 
+# Optional timeout settings. Default 28800 (8h)
+#mysql_wait_timeout: "28800"
+#mysql_interactive_timeout: "28800"
+
 mysql_timezone_info: "false"
 
 mysql_databases: []

templates/etc_my.cnf-centos.j2

@@ -59,6 +59,12 @@ table_open_cache        = {{ mysql_table_cache }}
 thread_concurrency      = {{ mysql_thread_concurrency }}
 {% endif %}
 sort_buffer_size        = {{ mysql_sort_buffer_size }}
+{% if mysql_wait_timeout is defined %}
+wait_timeout            = {{ mysql_wait_timeout }}
+{% endif %}
+{% if mysql_interactive_timeout is defined %}
+interactive_timeout     = {{ mysql_interactive_timeout }}
+{% endif %}
 
 # ** Query Cache Configuration, removed in MySQL >= 8.0
 {% if mysql_version_major|int < 8 %}

templates/etc_mysql_my.cnf.j2

@@ -56,6 +56,12 @@ table_open_cache        = {{ mysql_table_cache }}
 thread_concurrency      = {{ mysql_thread_concurrency }}
 {% endif %}
 sort_buffer_size        = {{ mysql_sort_buffer_size }}
+{% if mysql_wait_timeout is defined %}
+wait_timeout            = {{ mysql_wait_timeout }}
+{% endif %}
+{% if mysql_interactive_timeout is defined %}
+interactive_timeout     = {{ mysql_interactive_timeout }}
+{% endif %}
 
 # ** Query Cache Configuration, removed in MySQL >= 8.0
 {% if mysql_version_major|int < 8 %}