fix go imports and go mod

go.mod

@@ -1,21 +1,21 @@
 module github.com/harmony-one/harmony
 
-		go 1.16
+go 1.16
 
-		require (
-		github.com/VictoriaMetrics/fastcache v1.5.7 // indirect
-		github.com/Workiva/go-datastructures v1.0.50
-		github.com/allegro/bigcache v1.2.1
-		github.com/aristanetworks/goarista v0.0.0-20190607111240-52c2a7864a08 // indirect
-		github.com/aws/aws-sdk-go v1.30.1
-		github.com/beevik/ntp v0.3.0
-		github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce
-		github.com/cespare/cp v1.1.1
-		github.com/coinbase/rosetta-sdk-go v0.7.0
-		github.com/davecgh/go-spew v1.1.1
-		github.com/deckarep/golang-set v1.7.1
-		github.com/ethereum/go-ethereum v1.9.25
-		github.com/fjl/memsize v0.0.0-20180929194037-2a09253e352a // indirect
+require (
+	github.com/VictoriaMetrics/fastcache v1.5.7 // indirect
+	github.com/Workiva/go-datastructures v1.0.50
+	github.com/allegro/bigcache v1.2.1
+	github.com/aristanetworks/goarista v0.0.0-20190607111240-52c2a7864a08 // indirect
+	github.com/aws/aws-sdk-go v1.30.1
+	github.com/beevik/ntp v0.3.0
+	github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce
+	github.com/cespare/cp v1.1.1
+	github.com/coinbase/rosetta-sdk-go v0.7.0
+	github.com/davecgh/go-spew v1.1.1
+	github.com/deckarep/golang-set v1.7.1
+	github.com/ethereum/go-ethereum v1.9.25
+	github.com/fjl/memsize v0.0.0-20180929194037-2a09253e352a // indirect
 	github.com/garslo/gogen v0.0.0-20170307003452-d6ebae628c7c // indirect
 	github.com/golang/mock v1.6.0
 	github.com/golang/protobuf v1.5.2