[rpc] added current block number in utility metadata

hmy/hmy.go

@@ -197,6 +197,7 @@ func (hmy *Harmony) GetNodeMetadata() commonRPC.NodeMetadata {
 		ChainConfig:     *hmy.ChainConfig(),
 		IsLeader:        hmy.IsLeader(),
 		ShardID:         hmy.ShardID,
+		CurrentBlockNum: header.Number().Uint64(),
 		CurrentEpoch:    header.Epoch().Uint64(),
 		BlocksPerEpoch:  blockEpoch,
 		Role:            cfg.Role().String(),

rpc/common/types.go

@@ -55,6 +55,7 @@ type NodeMetadata struct {
 	ChainConfig     params.ChainConfig `json:"chain-config"`
 	IsLeader        bool               `json:"is-leader"`
 	ShardID         uint32             `json:"shard-id"`
+	CurrentBlockNum uint64             `json:"current-number"`
 	CurrentEpoch    uint64             `json:"current-epoch"`
 	BlocksPerEpoch  *uint64            `json:"blocks-per-epoch,omitempty"`
 	Role            string             `json:"role"`