Refactor DB Roles

[owine]

Deploy database roles with a unique database instance

Also adds multi instance to Wordpress. Closes #249

[saltydk]

I'll try getting through it tomorrow bud.

[owine]

Testing notes

MARIADB

• [x] bookstack
• [x] docspell
• [x] gitea
• [x] invoiceninja
• [x] koel
• [x] nextcloud
• [x] photoprism
• [x] plexshare
• [ ] teamspeak
• [x] wordpress (multi)

POSTGRES

• [x] joplin
• [x] miniflux
• [x] n8n
• [ ] paperless_ngx (also redis)
• [x] tandoor
• [x] wikijs

MONGODB

• [ ] rocketchat
• [ ] your_spotify - unable to test, I do not have a Spotify account

REDIS

• [x] tubearchivist
• [x] paperless_ngx

[owine]

Struggling with Paperless, RocketChat and TeamSpeak - if someone else can help test troubleshoot I'd appreciate it.

I am also unable to test your_spotify.