Kiln (#3067)

## Issue Addressed

Adds the [Kiln](https://github.com/eth-clients/merge-testnets/tree/main/kiln) configs, so we can use `--network kiln`. 

## Additional Notes

- Also includes the fix from #3066.

common/eth2_config/src/lib.rs

@@ -236,5 +236,6 @@ macro_rules! define_hardcoded_nets {
 define_hardcoded_nets!(
     (mainnet, "mainnet", GENESIS_STATE_IS_KNOWN),
     (prater, "prater", GENESIS_STATE_IS_KNOWN),
-    (gnosis, "gnosis", GENESIS_STATE_IS_KNOWN)
+    (gnosis, "gnosis", GENESIS_STATE_IS_KNOWN),
+    (kiln, "kiln", GENESIS_STATE_IS_KNOWN)
 );

common/eth2_network_config/built_in_network_configs/kiln/boot_enr.yaml

@@ -0,0 +1,3 @@
+- enr:-Iq4QMCTfIMXnow27baRUb35Q8iiFHSIDBJh6hQM5Axohhf4b6Kr_cOCu0htQ5WvVqKvFgY28893DHAg8gnBAXsAVqmGAX53x8JggmlkgnY0gmlwhLKAlv6Jc2VjcDI1NmsxoQK6S-Cii_KmfFdUJL2TANL3ksaKUnNXvTCv1tLwXs0QgIN1ZHCCIyk
+- enr:-KG4QFkPJUFWuONp5grM94OJvNht9wX6N36sA4wqucm6Z02ECWBQRmh6AzndaLVGYBHWre67mjK-E0uKt2CIbWrsZ_8DhGV0aDKQc6pfXHAAAHAyAAAAAAAAAIJpZIJ2NIJpcISl6LTmiXNlY3AyNTZrMaEDHlSNOgYrNWP8_l_WXqDMRvjv6gUAvHKizfqDDVc8feaDdGNwgiMog3VkcIIjKA
+- enr:-MK4QI-wkVW1PxL4ksUM4H_hMgTTwxKMzvvDMfoiwPBuRxcsGkrGPLo4Kho3Ri1DEtJG4B6pjXddbzA9iF2gVctxv42GAX9v5WG5h2F0dG5ldHOIAAAAAAAAAACEZXRoMpBzql9ccAAAcDIAAAAAAAAAgmlkgnY0gmlwhKRcjMiJc2VjcDI1NmsxoQK1fc46pmVHKq8HNYLkSVaUv4uK2UBsGgjjGWU6AAhAY4hzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA

common/eth2_network_config/built_in_network_configs/kiln/config.yaml

@@ -0,0 +1,69 @@
+# Extends the mainnet preset
+CONFIG_NAME: 'kiln'
+PRESET_BASE: 'mainnet'
+# Genesis
+# ---------------------------------------------------------------
+MIN_GENESIS_ACTIVE_VALIDATOR_COUNT: 95000
+# Mar 11th, 2022, 14:00 UTC
+MIN_GENESIS_TIME: 1647007200
+# Gensis fork
+GENESIS_FORK_VERSION: 0x70000069
+# 300 seconds (5 min)
+GENESIS_DELAY: 300
+
+
+# Forking
+# ---------------------------------------------------------------
+# Some forks are disabled for now:
+#  - These may be re-assigned to another fork-version later
+#  - Temporarily set to max uint64 value: 2**64 - 1
+
+# Altair
+ALTAIR_FORK_VERSION: 0x70000070
+ALTAIR_FORK_EPOCH: 50
+# Bellatrix
+BELLATRIX_FORK_VERSION: 0x70000071
+BELLATRIX_FORK_EPOCH: 150
+TERMINAL_TOTAL_DIFFICULTY: 1000000000000
+TERMINAL_BLOCK_HASH: 0x0000000000000000000000000000000000000000000000000000000000000000
+TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH: 18446744073709551615
+
+# Sharding
+SHARDING_FORK_VERSION: 0x03000000
+SHARDING_FORK_EPOCH: 18446744073709551615
+
+
+# Time parameters
+# ---------------------------------------------------------------
+# 12 seconds
+SECONDS_PER_SLOT: 12
+# 14 (estimate from Eth1 mainnet)
+SECONDS_PER_ETH1_BLOCK: 14
+# 2**8 (= 256) epochs ~27 hours
+MIN_VALIDATOR_WITHDRAWABILITY_DELAY: 256
+# 2**8 (= 256) epochs ~27 hours
+SHARD_COMMITTEE_PERIOD: 256
+# 16 blocks is ~190s
+ETH1_FOLLOW_DISTANCE: 16
+
+
+# Validator cycle
+# ---------------------------------------------------------------
+# 2**2 (= 4)
+INACTIVITY_SCORE_BIAS: 4
+# 2**4 (= 16)
+INACTIVITY_SCORE_RECOVERY_RATE: 16
+# 2**4 * 10**9 (= 16,000,000,000) Gwei
+EJECTION_BALANCE: 16000000000
+# 2**2 (= 4)
+MIN_PER_EPOCH_CHURN_LIMIT: 4
+# 2**16 (= 65,536)
+CHURN_LIMIT_QUOTIENT: 65536
+
+
+# Deposit contract
+# ---------------------------------------------------------------
+# Custom Ethereum testnet
+DEPOSIT_CHAIN_ID: 1337802
+DEPOSIT_NETWORK_ID: 1337802
+DEPOSIT_CONTRACT_ADDRESS: 0x4242424242424242424242424242424242424242

common/eth2_network_config/built_in_network_configs/kiln/deploy_block.txt

@@ -0,0 +1 @@
+0