proxysql: Add support for mysql-verbose_query_error

Default value is taken from openstack_logging_debug

Change-Id: I18d3ecac6e3d92029b12b3f9d6f27e3e6579a8c7

Author: mnasiadka

ansible/roles/loadbalancer/defaults/main.yml

@@ -218,6 +218,7 @@ mariadb_monitor_ping_interval: ""
 mariadb_monitor_ping_timeout: ""
 mariadb_monitor_ping_max_failures: ""
 mariadb_monitor_read_only_interval: ""
+mariadb_verbose_query_error: "{{ openstack_logging_debug }}"
 #
 # Defaults preserved for multinode setup
 # Tweaked for single-node

ansible/roles/loadbalancer/templates/proxysql/proxysql.yaml.j2

@@ -67,6 +67,9 @@ mysql_variables:
 {% if mariadb_shun_on_failures | length > 0 %}
    shun_on_failures: {{ mariadb_shun_on_failures }}
 {% endif %}
+{% if mariadb_verbose_query_error | bool %}
+   verbose_query_error: true
+{% endif %}
 {% if database_enable_tls_backend | bool %}
    ssl_p2s_ca: "/etc/proxysql/certs/root.crt"
    ssl_p2s_cert: "/etc/proxysql/certs/mariadb-cert.pem"