Testauskoira-rs database reconnection

[ahnl]

Re-deployment of testauskoira-rs also restarts its MariaDB service causing testausapis to lose connection to their database.

Therefore, we need to implement reconnection logic to our database connection code.

[Chicken]

Or instead revise the deployment logic for testauskoira-rs to not be a stupid SSH hack and instead use smarter technologies like watchtower to pull and restart only the testauskoira-rs container when a new image is released.

[developerfromjokela]

Or instead revise the deployment logic for testauskoira-rs to not be a stupid SSH hack and instead use smarter technologies like watchtower to pull and restart only the testauskoira-rs container when a new image is released.

+1