Surface DatabaseNotFound on routing message to user #519
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Failing to get a routing table because the user requests it for a non-existent DB would cause the driver to raise a
ServiceUnavailable("Routing support broken on server ...")
. This is not very helpful. This PR will change it so that the original error (Neo4jError
with codeNeo.ClientError.Database.DatabaseNotFound
) is surfaced to the user.