Draft: mattermost update to 9.9.0-bb.2

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/mattermost/-/blob/9.9.0-bb.2/CHANGELOG.md

Package MR

big-bang/product/packages/mattermost!243 (merged)

For Issue

Closes (link to issue here)

Upgrade Notices

**BREAKING CHANGELOG.md If using the subchart Postgres database for Mattermost, you will be required to perform a pg_dump before upgrading and then restore the database and data to the new pod in order to keep data. There is no clean upgrade path from prior PostgreSQL versions to the new version. This subchart incluster database is NOT a production setup/recommended installation.

**BREAKING CHANGELOG.md If you are setting a custom username, password or database for the subchart Postgres database for mattermost, the credential settings have moved.

| Old setting | New setting | | | | | postgresql.postgresqlUsername | postgresql.auth.username | | postgresql.postgresqlPassword | postgresql.auth.password | | postgresql.postgresqlDatabase | postgresql.auth.database |