raft: test: check that a server with id zero cannot be neither created nor added to a config
raft: test: check that a server with id zero cannot be neither created nor added to a config

Message-Id: <e9fad67b4e229bd8ceeffab4da487fa57ac6bbec@scylladb.com>

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla