Submit leader's vote after observing 2/3 validator votes (#780)

* fixup!

* fixups!

* send the vote and count it

* actually vote

* test

* Spelling fixes

* Process the voting transaction in the leader's bank

* Send tokens to the leader

* Give leader tokens in more cases

* Test for write_stage::leader_vote

* Request airdrop inside fullnode and not the script

* Change readme to indicate that drone should be up before leader

And start drone before leader in snap scripts

* Rename _kp => _keypair for keypairs and other review fixups

* Remove empty else
* tweak test_leader_vote numbers to be closer to testing 2/3 boundary
* combine creating blob and transaction for leader/validator

multinode-demo/remote_leader.sh

@@ -10,5 +10,5 @@ PATH="$HOME"/.cargo/bin:"$PATH"
 
 # Run setup
 USE_INSTALL=1 ./multinode-demo/setup.sh -p
-USE_INSTALL=1 SOLANA_CUDA=1 ./multinode-demo/leader.sh >leader.log 2>&1 &
 USE_INSTALL=1 ./multinode-demo/drone.sh >drone.log 2>&1 &
+USE_INSTALL=1 SOLANA_CUDA=1 ./multinode-demo/leader.sh >leader.log 2>&1 &

multinode-demo/validator.sh

@@ -76,14 +76,6 @@ $rsync -vPrz --max-size=100M "$rsync_leader_url"/config/ "$SOLANA_LEADER_CONFIG_
   exit 1
 }
 
-# Ensure the validator has at least 1 token before connecting to the network
-# TODO: Remove this workaround
-while ! $solana_wallet \
-          -l "$SOLANA_LEADER_CONFIG_DIR"/leader.json \
-          -k "$SOLANA_CONFIG_PRIVATE_DIR"/validator-id.json airdrop --tokens 1; do
-  sleep 1
-done
-
 trap 'kill "$pid" && wait "$pid"' INT TERM
 $program \
   --identity "$SOLANA_CONFIG_DIR"/validator.json \