Update local testnet scripts, fix eth1 sim (#1184)

* Update local testnet scripts

* Add logs when decrypting validators

* Update comment

* Update account manager

* Make random key generation explicit

* Remove unnecessary clap constraint

* Only decrypt voting keypair for eth1 deposit

* Use insecure kdf for insecure keypairs

* Simplify local testnet keygen

* Update local testnet

* Fix eth1 sim

* Add eth1 sim to CI again

* Remove old local testnet docs

* Tidy

* Remove checks for existing validators

* Tidy

* Fix typos

scripts/local_testnet/README.md

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+# Simple Local Testnet
+
+These scripts allow for running a small local testnet with two beacon nodes and
+one validator client. This setup can be useful for testing and development.
+
+## Requirements
+
+The scripts require `lci` and `lighthouse` to be installed on `PATH`. From the
+root of this repository, run:
+
+```bash
+cargo install --path lighthouse --force --locked
+cargo install --path lcli --force --locked
+```
+
+## Starting the testnet
+
+Assuming you are happy with the configuration in `var.env`, create the testnet
+directory, genesis state and validator keys with:
+
+```bash
+./setup
+```
+
+Start the first beacon node:
+
+```bash
+./beacon_node
+```
+
+In a new terminal, start the validator client which will attach to the first
+beacon node:
+
+```bash
+./validator_client
+```
+
+In a new terminal, start the second beacon node which will peer with the first:
+
+```bash
+./second_beacon_node
+```
+
+## Additional Info
+
+### Debug level
+
+The beacon nodes and validator client have their `--debug-level` set to `info`.
+Specify a different debug level like this:
+
+```bash
+./validator_client debug
+./beacon_node trace
+./second_beacon_node warn
+```
+
+### Starting fresh
+
+Delete the current testnet and all related files using:
+
+```bash
+./clean
+```
+
+
+### Updating the genesis time of the beacon state
+
+If it's been a while since you ran `./setup` then the genesis time of the
+genesis state will be far in the future, causing lots of skip slots.
+
+Update the genesis time to now using:
+
+```bash
+./reset_genesis_time
+```
+
+> Note: you probably want to drop the beacon node database and the validator
+> client slashing database if you do this. When using small validator counts
+> it's probably easy to just use `./clean && ./setup`.

scripts/local_testnet/beacon_node.sh

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+#!/bin/bash
+
+#
+# Starts a beacon node based upon a genesis state created by
+# `./local_testnet_genesis_state`.
+#
+
+source ./vars.env
+
+DEBUG_LEVEL=${1:-info}
+
+exec lighthouse \
+	--debug-level $DEBUG_LEVEL \
+	bn \
+	--datadir $BEACON_DIR \
+	--testnet-dir $TESTNET_DIR \
+	--dummy-eth1 \
+	--http \
+	--enr-address 127.0.0.1 \
+	--enr-udp-port 9000 \
+	--enr-tcp-port 9000 \

scripts/local_testnet/clean.sh

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+#!/bin/bash
+
+#
+# Deletes all files associated with the local testnet.
+#
+
+source ./vars.env
+
+rm -r $DATADIR

scripts/local_testnet/reset_genesis_time.sh

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+#!/bin/bash
+
+#
+# Resets the beacon state genesis time to now.
+#
+
+source ./vars.env
+
+NOW=$(date +%s)
+
+lcli \
+	change-genesis-time \
+	$TESTNET_DIR/genesis.ssz \
+	$(date +%s)
+
+echo "Reset genesis time to now ($NOW)"

scripts/local_testnet/second_beacon_node.sh

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+#!/bin/bash
+
+#
+# Starts a beacon node based upon a genesis state created by
+# `./local_testnet_genesis_state`.
+#
+
+source ./vars.env
+
+DEBUG_LEVEL=${1:-info}
+
+exec lighthouse \
+	--debug-level $DEBUG_LEVEL \
+	bn \
+	--datadir $BEACON_DIR-2 \
+	--testnet-dir $TESTNET_DIR \
+	--dummy-eth1 \
+	--http \
+	--http-port 6052 \
+	--boot-nodes $(cat $BEACON_DIR/beacon/network/enr.dat)

scripts/local_testnet/setup.sh

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+#!/bin/bash
+
+#
+# Produces a testnet specification and a genesis state where the genesis time
+# is now.
+#
+
+source ./vars.env
+
+lcli \
+	--spec mainnet \
+	new-testnet \
+	--deposit-contract-address 0000000000000000000000000000000000000000 \
+	--testnet-dir $TESTNET_DIR \
+	--min-genesis-active-validator-count $VALIDATOR_COUNT \
+	--force
+
+echo Specification generated at $TESTNET_DIR.
+echo "Generating $VALIDATOR_COUNT validators concurrently... (this may take a while)"
+
+lcli \
+	insecure-validators \
+	--count $VALIDATOR_COUNT \
+	--validators-dir $VALIDATORS_DIR \
+	--secrets-dir $SECRETS_DIR
+
+echo Validators generated at $VALIDATORS_DIR with keystore passwords at $SECRETS_DIR.
+echo "Building genesis state... (this might take a while)"
+
+lcli \
+	--spec mainnet \
+	interop-genesis \
+	--testnet-dir $TESTNET_DIR \
+	$VALIDATOR_COUNT
+
+echo Created genesis state in $TESTNET_DIR

scripts/local_testnet/validator_client.sh

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+#!/bin/bash
+
+#
+# Starts a validator client based upon a genesis state created by
+# `./local_testnet_genesis_state`.
+#
+
+source ./vars.env
+
+DEBUG_LEVEL=${1:-info}
+
+exec lighthouse \
+	--debug-level $DEBUG_LEVEL \
+	vc \
+	--datadir $VALIDATORS_DIR \
+	--secrets-dir $SECRETS_DIR \
+	--testnet-dir $TESTNET_DIR \
+	--auto-register

scripts/local_testnet/vars.env

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+DATADIR=~/.lighthouse/local-testnet
+TESTNET_DIR=$DATADIR/testnet
+BEACON_DIR=$DATADIR/beacon
+VALIDATORS_DIR=$DATADIR/validators
+SECRETS_DIR=$DATADIR/secrets
+
+VALIDATOR_COUNT=1024