Release 0.9.0

New features:
- Scrubbing! Check documentation: [auto_scrub](src/branch/master/docs/config/osd.en.md#auto_scrub)
- Document online-updatable configuration parameters

Bug fixes:
- Fix NaN during PG optimisation if there are nonexisting OSDs in node_placement
- Fix monitor crash on pool deletion
- Clear journal_device and meta_device before initialising the next OSD in automatic mode
- Sync unsynced deletes before overwriting them with a lower version
  (reproducted mostly/only after scrubbing)

rpm/vitastor-el9.Dockerfile

@@ -18,7 +18,7 @@ ADD . /root/vitastor
 RUN set -e; \
     cd /root/vitastor/rpm; \
     sh build-tarball.sh; \
-    cp /root/vitastor-0.8.9.el9.tar.gz ~/rpmbuild/SOURCES; \
+    cp /root/vitastor-0.9.0.el9.tar.gz ~/rpmbuild/SOURCES; \
     cp vitastor-el9.spec ~/rpmbuild/SPECS/vitastor.spec; \
     cd ~/rpmbuild/SPECS/; \
     rpmbuild -ba vitastor.spec; \