Mention list for upgrading to ocis 4.0

[mmattel]

This is a collection of items for the upcoming 3.1 release that need to be mentionend in:

• Upgrading Infinite Scale
• Infinite Scale Release Notes

Note that the list gets updated regulary.

List of items to cover:

• Breaking Change:
  The ocis yaml parser does not longer alias yes --> true.
  Only true is now possible. Also see the following PR.

• Add SSE to userlog

• introduce enterprise and community release
  Note that this needs mentioning in the intro
  Not in scope for this release

• issue config parse doesn't deal with time.Duration values correctly
  PR will be linked when available.

• reva Changelog

• HC: add redis deployment example

• HC: mail template configuration

• HC: enable maintenance jobs for ci linting

• HC: use external ldap bind password secret for keycloak example

• HC: Disable OnlyOffice Chat

• HC: Make job image configurable

• HC: Improved resource templating

• HC: add web url config options

• HC: add nats deployment example

• HC: add rook ceph example

• HC: add office deployment example

• HC: fix store update strategy

• HC: add fulltext search capability and extractor size limit

• HC: Fix missing feature flag check for email template and uncomment tracing config

• HC: fix hpa settings

• HC: add shared cache for settings service according to latest loadtests

• HC: create a service account only for the kubernetes registry

• HC: add echo for newline after printed password

• HC: support using etcd as service registry

• HC: support post logout redirect uri configuration

• HC: drop kubernetes 1.24 and maintenance

• HC: harden appprovider health check

• HC: ensure compability to nats chart 1.0.0 and setup accounts

• HC: consolidate examples persistence settings

• HC: use oCIS 4.0.0-rc.1

• HC: use oCIS 4.0.0 and bump version prior chart release

• HC: use the full version of tika for ocr

@tbsbdr @micbar @wkloucek fyi

[mmattel]

I am repoening this as it contains a comprehensive list of HC changes.