Hardcoded ssl disable in db-credentials secret

Summary

SSL disable is currently hardcoded in the conn string on line 13,14 of this template. Currently blocks from enabling SSL connection to database. SSL settings should be a templated value with the option to enable SSL.

Steps to reproduce

• Force SSL in database configuration
• Unable to connect to database with ssl disable hardcoded in secret

What is the current behavior?

• No option to enable SSL in connstring in secret

What is the expected behavior?

• A value determining the ssl behavior configured in connstring
• Ex: sslMode=disable sslMode=require sslMode=prefer etc

Relevant logs and/or screenshots

Possible fixes

https://repo1.dso.mil/big-bang/product/packages/mattermost/-/blob/main/chart/templates/db-credentials.yaml?ref_type=heads#L13 https://repo1.dso.mil/big-bang/product/packages/mattermost/-/blob/main/chart/templates/db-credentials.yaml?ref_type=heads#L14

/cc {put CODEOWNERs @githandles here}