* Default to use rocks

verify on lakefs run that migration is required. cataloger type is not
set, there are repositories on mvcc tables and migration didn't run

* update installation required message

* add upgrade doc url

* Upgrade docs for data migration

* Update upgrade information

* instruct lakefs migrate up

* Update docs/deploying/upgrade.md

Co-authored-by: Oz Katz <oz.katz@treeverse.io>

* update docs

* Print migration message to output and short description to the log

Co-authored-by: Oz Katz <oz.katz@treeverse.io>