Update primary key of container_log table to include period

Author: jhoxhaa

schema/mysql/schema.sql

@@ -158,7 +158,7 @@ CREATE TABLE container_log (
   last_update bigint NOT NULL,
   `period` bigint unsigned NOT NULL,
 
-  PRIMARY KEY (container_id, pod_id)
+  PRIMARY KEY (container_id, pod_id, period)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
 
 CREATE TABLE deployment (