CaaS3: Update hostname

linux-q0sf:~ # cat /var/lib/misc/infra-secrets/mariadb-root-password  
eVSf9Ss/HFa4Rj68ymzhmVsHvhdV6i5aqUpXuboMGRdwo1SVnysDd/wg0De+9FJymdBsJLdmYsdU

linux-q0sf:~ # docker exec -ti d72182149834 bash  
bash-4.3# mysql -u root -p  
Enter password:  
Welcome to the MariaDB monitor. Commands end with ; or \g.  
Your MariaDB connection id is 18  
Server version: 10.0.34-MariaDB SLE 12 SP1 package

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\\h' for help. Type '\\c' to clear the current input statement.

MariaDB [(none)]> show databases;  
+--------------------+  
| Database |  
+--------------------+  
| information_schema |  
| mysql |  
| performance\_schema |  
| velum_production |  
+--------------------+  
4 rows in set (0.01 sec)

MariaDB [(none)]> use velum_production;

MariaDB [velum_production]> update minions set fqdn="caas2.loc.al" where minion_id = "c2136e77f62444b6a68b758a231f00eb";  
Query OK, 1 row affected (0.01 sec)  
Rows matched: 1 Changed: 1 Warnings: 0

MariaDB [velum_production]> select * from minions;  
+----+----------------------------------+--------------+------+-----------+-------------------------+------------------+---------------------+---------------------+  
| id | minion_id | fqdn | role | highstate | tx_update_reboot_needed | tx_update_failed | created_at | updated_at |  
+----+----------------------------------+--------------+------+-----------+-------------------------+------------------+---------------------+---------------------+  
| 1 | admin | admin | 2 | 3 | 0 | 0 | 2018-11-05 09:29:16 | 2018-11-05 09:29:16 |  
| 2 | c2136e77f62444b6a68b758a231f00eb | caas2.loc.al | NULL | 0 | 0 | 0 | 2018-11-05 09:40:28 | 2018-11-05 09:40:28 |  
| 3 | 82177752bc1f4613beae955d4080d994 | linux.loc.al | NULL | 0 | 0 | 0 | 2018-11-05 09:40:28 | 2018-11-05 09:40:28 |  
+----+----------------------------------+--------------+------+-----------+-------------------------+------------------+---------------------+---------------------+  
3 rows in set (0.00 sec)

MariaDB [velum_production]> update minions set fqdn="caas3.loc.al" where minion_id = "82177752bc1f4613beae955d4080d994";  
Query OK, 1 row affected (0.01 sec)  
Rows matched: 1 Changed: 1 Warnings: 0