Draft: tos3to4-notify: enable automatic migration
This enables automatic migration for all Turris 1.x routers running on BTRFS and up to two thousands of Omnias (the exact number depends if we hit already migrated routers or not). That should give us up to three thousands of routers to handle and support migration on.
The Omnia routers are selected based on serial number. The decimal representation of serial number has to end with zero. The decimal representation can be obtained using (package bc has to be installed): echo "ibase=16; $(atsha204cmd serial-number)"| bc
The documentation change turris/user-docs!230 (merged)