Run the rosetta connectivity tests from bare apps

`RosettaDevnetConnect` and `RosettaMainnetConnect` ran the published
`mina-rosetta` docker image, so they required both the debian and the docker
build. They now stand the same stack up from the apps cache binaries:
`genesis_ledgers/<network>.json` supplies the runtime config (the config deb
copies that file verbatim) and `src/app/archive/*.sql` supplies the schema and
the upgrade/downgrade scripts.

The process layout and every assertion are unchanged — `rosetta-sanity.sh`,
`rosetta-load.sh` and the compatibility test now run directly instead of through
`docker exec`. `scripts/tests/rosetta-connectivity.sh` is kept for testing
published images.
