feat: set defaults for --v2-upgrade-height (celestiaorg#4091)

Closes celestiaorg#3995

If a user specifies the `--v2-upgrade-height` flag then it takes
precedence over any defaults. If the user doesn't specify a
`--v2-upgrade-height` flag and the chainID is `arabica-11`, `mocha-4`,
or `celestia` then the v2 upgrade height is set to the block height that
was coordinated on those chains.

See:
https://docs.celestia.org/how-to-guides/network-upgrade-process#lemongrass-network-upgrade

## Testing

1. `./scripts/single-node.sh` doesn't set a v2 upgrade height
2. `./arabica.sh` if we remove the `--v2-upgrade-height` flag in the
script, gets defaulted correctly
3. `./arabica.sh` if we override the `--v2-upgrade-height` flag in the
script, that gets used

cmd/celestia-appd/cmd/start.go

@@ -14,6 +14,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/celestiaorg/celestia-app/v3/pkg/appconsts"
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/flags"
 	"github.com/cosmos/cosmos-sdk/codec"
@@ -117,6 +118,20 @@ is performed. Note, when enabled, gRPC will also be automatically enabled.
 				return err
 			}
 
+			switch clientCtx.ChainID {
+			case appconsts.ArabicaChainID:
+				serverCtx.Logger.Info(fmt.Sprintf("Since the chainID is %v, configuring the default v2 upgrade height to %v", appconsts.ArabicaChainID, appconsts.ArabicaUpgradeHeightV2))
+				serverCtx.Viper.SetDefault(UpgradeHeightFlag, appconsts.ArabicaUpgradeHeightV2)
+			case appconsts.MochaChainID:
+				serverCtx.Logger.Info(fmt.Sprintf("Since the chainID is %v, configuring the default v2 upgrade height to %v", appconsts.MochaChainID, appconsts.MochaUpgradeHeightV2))
+				serverCtx.Viper.SetDefault(UpgradeHeightFlag, appconsts.MochaUpgradeHeightV2)
+			case appconsts.MainnetChainID:
+				serverCtx.Logger.Info(fmt.Sprintf("Since the chainID is %v, configuring the default v2 upgrade height to %v", appconsts.MainnetChainID, appconsts.MainnetUpgradeHeightV2))
+				serverCtx.Viper.SetDefault(UpgradeHeightFlag, appconsts.MainnetUpgradeHeightV2)
+			default:
+				serverCtx.Logger.Info(fmt.Sprintf("No default value exists for the v2 upgrade height when the chainID is %v", clientCtx.ChainID))
+			}
+
 			withTM, _ := cmd.Flags().GetBool(flagWithTendermint)
 			if !withTM {
 				serverCtx.Logger.Info("starting ABCI without Tendermint")

pkg/appconsts/chain_ids.go

@@ -2,4 +2,6 @@ package appconsts
 
 const (
 	ArabicaChainID = "arabica-11"
+	MochaChainID   = "mocha-4"
+	MainnetChainID = "celestia"
 )

pkg/appconsts/upgrade_heights.go

@@ -0,0 +1,13 @@
+package appconsts
+
+const (
+	// ArabicaUpgradeHeightV2 is the block height at which the arabica-11
+	// upgraded from app version 1 to 2.
+	ArabicaUpgradeHeightV2 = 1751707
+	// MochaUpgradeHeightV2 is the block height at which the mocha-4 upgraded
+	// from app version 1 to 2.
+	MochaUpgradeHeightV2 = 2585031
+	// MainnetUpgradeHeightV2 is the block height at which the celestia upgraded
+	// from app version 1 to 2.
+	MainnetUpgradeHeightV2 = 2371495
+)