service: add beacon_node_history_retention

Signed-off-by: Jakub Sokołowski <jakub@status.im>

defaults/main.yml

@@ -42,6 +42,7 @@ beacon_node_repo_branch: 'stable'
 beacon_node_network: 'mainnet'
 beacon_node_log_level: 'INFO' # TRACE DEBUG INFO NOTICE WARN ERROR FATAL NONE
 beacon_node_log_format: 'json' # auto colors nocolors json none
+beacon_node_history_retention: 'archive' # archive / pruned
 beacon_node_subscribe_all: false
 beacon_node_doppelganger_detection: true
 beacon_node_doppelganger_exit_code: 129

templates/beacon-node.service.j2

@@ -20,6 +20,7 @@ ExecStart={{ beacon_node_repo_path }}/build/nimbus_beacon_node \
     --secrets-dir={{ beacon_node_secrets_path }} \
     --validators-dir={{ beacon_node_validators_path }} \
     --era-dir={{ beacon_node_era_dir_path }} \
+    --history={{ beacon_node_history_retention }} \
 {% for url in beacon_node_web3_urls | mandatory %}
     --web3-url={{ url | mandatory }} \
 {% endfor %}