[DRBD-announce] linstor-server 1.9.0 release

Hi!

Here is a new minor Linstor release, this release contains more bug fixes
than new features.
Notable features are a new auto-unplace option, to reduce the replica-count
of resources
to the value set in the resource-group after a certain time. And
error-reports can now be deleted
from the REST-API (client).

linstor-server 1.9.0
--------------------
 * Added auto-"unplace", automatically removes resources if they exceed the
replica count if `DrbdOptions/auto-unplace` is set
 * Added error-report deletion API
 * Expose DRBD promotion_score and may_promote via REST-API and server sent
events
 * Prometheus metrics are now mostly cached and much faster to query
 * Send SD_NOTIFY READY to systemd if services are ready
 * OpenFlex resource are now correctly limited to 32 characters
 * Fix etcd modify net-interface (incorrect serialization)
 * Fix autoplacer also toggling diskless resources
 * Fix snapshot-shipping with more than 1 volume definitions
 * Fix zfs create options handling
 * Fixed recaching of lvm-filter
 * Fix missing client answer if drbd device doesn't become ready in
reasonable time
 * REST-API v1.4.0

https://www.linbit.com/downloads/linstor/linstor-server-1.9.0.tar.gz

Linstor PPA:
https://launchpad.net/~linbit/+archive/ubuntu/linbit-drbd9-stack

Cheers,
Rene