Validator on-boarding docs (#656)

* Add first draft of validator onboarding

* Update docs

* Add documentation link to main README

* Continue docs development

* Update book readme

* Update docs

* Allow vc to run without testnet subcommand

* Small change to onboarding docs

* Tidy CLI help messages

* Update docs

* Add check to val client see if beacon node is synced

* Add notifier service to validator client

* Re-order onboarding steps

* Update deposit contract address

* Update testnet dir

* Add note about public eth1 node

* Set default eth1 endpoint to sigp

* Fix broken test

* Try fix eth1 cache locking

* Be more specific about eth1 endpoint

* Increase gas limit for deposit

* Fix default deposit amount

eth2/utils/eth2_testnet_config/src/lib.rs

@@ -198,9 +198,9 @@ impl<E: EthSpec> Eth2TestnetConfig<E> {
 mod tests {
     use super::*;
     use tempdir::TempDir;
-    use types::{Eth1Data, Hash256, MinimalEthSpec, YamlConfig};
+    use types::{Eth1Data, Hash256, MainnetEthSpec, YamlConfig};
 
-    type E = MinimalEthSpec;
+    type E = MainnetEthSpec;
 
     #[test]
     fn hard_coded_works() {

eth2/utils/eth2_testnet_config/testnet/config.yaml

@@ -1,13 +1,13 @@
 FAR_FUTURE_EPOCH: 18446744073709551615
 BASE_REWARDS_PER_EPOCH: 4
 DEPOSIT_CONTRACT_TREE_DEPTH: 32
-SECONDS_PER_DAY: 480
-MAX_COMMITTEES_PER_SLOT: 4
-TARGET_COMMITTEE_SIZE: 4
+SECONDS_PER_DAY: 2400
+MAX_COMMITTEES_PER_SLOT: 64
+TARGET_COMMITTEE_SIZE: 128
 MIN_PER_EPOCH_CHURN_LIMIT: 4
 CHURN_LIMIT_QUOTIENT: 65536
-SHUFFLE_ROUND_COUNT: 10
-MIN_GENESIS_ACTIVE_VALIDATOR_COUNT: 64
+SHUFFLE_ROUND_COUNT: 90
+MIN_GENESIS_ACTIVE_VALIDATOR_COUNT: 16384
 MIN_GENESIS_TIME: 0
 MIN_DEPOSIT_AMOUNT: 100
 MAX_EFFECTIVE_BALANCE: 3200000000
@@ -35,15 +35,16 @@ DOMAIN_VOLUNTARY_EXIT: 0x04000000
 JUSTIFICATION_BITS_LENGTH: 0x04000000
 MAX_VALIDATORS_PER_COMMITTEE: 2048
 GENESIS_EPOCH: 0
-SLOTS_PER_EPOCH: 8
-SLOTS_PER_ETH1_VOTING_PERIOD: 16
-SLOTS_PER_HISTORICAL_ROOT: 64
-EPOCHS_PER_HISTORICAL_VECTOR: 64
-EPOCHS_PER_SLASHINGS_VECTOR: 64
+SLOTS_PER_EPOCH: 32
+SLOTS_PER_ETH1_VOTING_PERIOD: 1024
+SLOTS_PER_HISTORICAL_ROOT: 8192
+EPOCHS_PER_HISTORICAL_VECTOR: 65536
+EPOCHS_PER_SLASHINGS_VECTOR: 8192
 HISTORICAL_ROOTS_LIMIT: 16777216
 VALIDATOR_REGISTRY_LIMIT: 1099511627776
 MAX_PROPOSER_SLASHINGS: 16
 MAX_ATTESTER_SLASHINGS: 1
 MAX_ATTESTATIONS: 128
 MAX_DEPOSITS: 16
-MAX_VOLUNTARY_EXITS: 16
+MAX_VOLUNTARY_EXITS: 16
+ETH1_FOLLOW_DISTANCE: 16

eth2/utils/eth2_testnet_config/testnet/deploy_block.txt

@@ -1 +1 @@
-1743571
+1773705

eth2/utils/eth2_testnet_config/testnet/deposit_contract.txt

@@ -1 +1 @@
-0xf382356688ae7dd3c2d6deb7e79c3ffe68816251
+0x13e4d66c7215d7b63fec7b52fc65e6655093d906