Restore connection route tests (openwallet-foundation#3461)

* refactor: restore conn route tests

Signed-off-by: Daniel Bluhm <[email protected]>

* refactor: remove tests that are no longer relevant

Signed-off-by: Daniel Bluhm <[email protected]>

* fix: ref to conn manager

Signed-off-by: Daniel Bluhm <[email protected]>

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Signed-off-by: Daniel Bluhm <[email protected]>

Author: dbluhm