feat(server): export ReleaseVersion

releaseVersion is needed in etcd.go to print it out in the -version
flag.

etcd.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"io/ioutil"
 	"os"
 	"strings"
@@ -121,7 +122,7 @@ func main() {
 	flag.Parse()
 
 	if printVersion {
-		fmt.Println(releaseVersion)
+		fmt.Println(server.ReleaseVersion)
 		os.Exit(0)
 	}
 

scripts/release-version

@@ -4,5 +4,5 @@ VER=$(git describe --tags HEAD)
 
 cat <<EOF
 package server
-const releaseVersion = "$VER"
+const ReleaseVersion = "$VER"
 EOF

server/server.go

@@ -195,7 +195,7 @@ func (s *Server) OriginAllowed(origin string) bool {
 // Handler to return the current version of etcd.
 func (s *Server) GetVersionHandler(w http.ResponseWriter, req *http.Request) error {
 	w.WriteHeader(http.StatusOK)
-	fmt.Fprintf(w, "etcd %s", releaseVersion)
+	fmt.Fprintf(w, "etcd %s", ReleaseVersion)
 	return nil
 }
 

server/version.go

@@ -5,4 +5,4 @@ const Version = "v2"
 // TODO: The release version (generated from the git tag) will be the raft
 // protocol version for now. When things settle down we will fix it like the
 // client API above.
-const PeerVersion = releaseVersion
+const PeerVersion = ReleaseVersion