* Add first leader to genesis entries, consume in genesis.sh
* Set bootstrap leader in the bank on startup, remove instantiation of bootstrap leader from bin/fullnode
* Remove need to initialize bootstrap leader in leader_scheduler, now can be read from genesis entries
* Add separate interface new_with_leader() in mint for creating genesis leader entries
Now that the Bank is single-threaded again, we can spin up new
accounts on the fly without concern of thread contention. Likewise,
we can send all transactions from a single account, which was also
problematic in the multi-threaded bank. Sending from one account will
also make client-demo straightforward to port to solana-drone.
IPADDR is simple, but not exactly what we need for testnet, where NAT'd
folks need to join in, need to advertize themselves as on the interweb.
myip() helps, but there's some TODOs: fullnode-config probably needs to
be told where it lives in the real world (machine interfaces tell us dick),
or incorporate something like the "ifconfig.co" code in myip.sh
* add setup to combine init steps, configurable initial mint
* bash -e -> bash and be explicit about errors with || exit $?
* feed transaction logs to validator, too
