Update mariadb defaults to upstream's

Upstream mariadb has with a default server much higher defaults and our
servers have plenty of ram to spare as well.

roles/mariadb/defaults/main.yml

@@ -5,7 +5,7 @@ mariadb_skip_networking: True
 mariadb_key_buffer_size: '16M'
 mariadb_max_allowed_packet: '16M'
 mariadb_table_open_cache: '64'
-mariadb_sort_buffer_size: '512K'
+mariadb_sort_buffer_size: '1M'
 mariadb_net_buffer_length: '8K'
 mariadb_read_buffer_size: '256K'
 mariadb_read_rnd_buffer_size: '512K'
@@ -17,9 +17,9 @@ mariadb_max_connections: '400'
 mariadb_thread_cache_size: '16'
 
 mariadb_innodb_data_file_path: 'ibdata1:10M:autoextend'
-mariadb_innodb_buffer_pool_size: '16M'
-mariadb_innodb_log_file_size: '64M'
-mariadb_innodb_log_buffer_size: '8M'
+mariadb_innodb_buffer_pool_size: '128M'
+mariadb_innodb_log_file_size: '96M'
+mariadb_innodb_log_buffer_size: '16M'
 mariadb_innodb_flush_log_at_trx_commit: '1'
 mariadb_innodb_stats_sample_pages: '32'
 mariadb_innodb_thread_concurrency: '8'