Add instructions for testnet2 deployment ops (#31)

Part of [Create a public laconicd testnet](https://www.notion.so/Create-a-public-laconicd-testnet-896a11bdd8094eff8f1b49c0be0ca3b8)

- Add instructions to setup stage2 laconicd deployment
- Add instructions for stage1 to stage2 migration
- Add a script and instructions for users to upgrade their nodes to testnet stage2

Reviewed-on: cerc-io/testnet-laconicd-stack#31
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

stack-orchestrator/config/laconic-console/cli/create-config.sh

@@ -18,6 +18,7 @@ services:
     chainId: ${CERC_LACONICD_CHAIN_ID}
     gas: ${CERC_LACONICD_GAS}
     fees: ${CERC_LACONICD_FEES}
+    gasPrice: ${CERC_LACONICD_GASPRICE}
 EOF
 
 echo "Exported config to $config_file"

stack-orchestrator/config/laconicd/run-laconicd.sh

@@ -21,6 +21,7 @@ echo "Env:"
 echo "Moniker: $CERC_MONIKER"
 echo "Chain Id: $CERC_CHAIN_ID"
 echo "Persistent peers: $CERC_PEERS"
+echo "Min gas price: $MIN_GAS_PRICE"
 echo "Log level: $CERC_LOGLEVEL"
 
 NODE_HOME=/root/.laconicd
@@ -40,12 +41,16 @@ else
   echo "Node data dir $NODE_HOME/data already exists, skipping initialization..."
 fi
 
+# Enable cors
+sed -i 's/cors_allowed_origins.*$/cors_allowed_origins = ["*"]/' $HOME/.laconicd/config/config.toml
+
 # Update config with persistent peers
 sed -i "s/^persistent_peers *=.*/persistent_peers = \"$CERC_PEERS\"/g" $NODE_HOME/config/config.toml
 
 echo "Starting laconicd node..."
 laconicd start \
   --api.enable \
+  --minimum-gas-prices=${MIN_GAS_PRICE}alnt \
   --rpc.laddr="tcp://0.0.0.0:26657" \
   --gql-playground --gql-server \
   --log_level $CERC_LOGLEVEL \