Default plugins should be installed only using
the blueprint mechanism from the ecosystem. With
the old list of default plugins, this was not
really usable, because the old list of default
plugins always installed nearly all plugins
available, so that the user had no way to create
a smaller default set.

So with this, we completely remove the default
plugin list. All necessary plugins like the
legacy plugins for CAS will still be installed by
the dependency checks.

* Use Java 17

* Bump script plugin version to 2.5.0

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Co-authored-by: Eduard Heimbuch <eduard.heimbuch@cloudogu.com>

* Prepare for store caches

* Prepare for store caches

* Fix cache property name

* Remove oss plugin center url for snapshots

* Log change

Without this volume it might be possible,
that big temporary files are written in the
docker image which might lead to errors due
to full drives.