Refactor versions

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

api/api_common.go

@@ -4,10 +4,9 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/filecoin-project/lotus/build"
 	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
-
-	"github.com/filecoin-project/lotus/build"
 )
 
 type Permission = string
@@ -40,7 +39,7 @@ type Version struct {
 	// this api
 	//
 	// See APIVersion in build/version.go
-	APIVersion uint32
+	APIVersion build.Version
 
 	// TODO: git commit / os / genesis cid?
 
@@ -49,6 +48,5 @@ type Version struct {
 }
 
 func (v Version) String() string {
-	vM, vm, vp := build.VersionInts(v.APIVersion)
-	return fmt.Sprintf("%s+api%d.%d.%d", v.Version, vM, vm, vp)
+	return fmt.Sprintf("%s+api%s", v.Version, v.APIVersion.String())
 }