add version command and add build information to metrics

Signed-off-by: David Christofas <dchristofas@owncloud.com>

accounts/pkg/server/grpc/server.go

@@ -17,6 +17,7 @@ func Server(opts ...Option) grpc.Service {
 		grpc.Namespace(options.Config.GRPC.Namespace),
 		grpc.Logger(options.Logger),
 		grpc.Flags(options.Flags...),
+		grpc.Version(options.Config.Server.Version),
 	)
 
 	if err := proto.RegisterAccountsServiceHandler(service.Server(), handler); err != nil {

accounts/pkg/server/http/server.go

@@ -18,7 +18,7 @@ func Server(opts ...Option) http.Service {
 	service := http.NewService(
 		http.Logger(options.Logger),
 		http.Name(options.Name),
-		http.Version(version.String),
+		http.Version(options.Config.Server.Version),
 		http.Address(options.Config.HTTP.Addr),
 		http.Namespace(options.Config.HTTP.Namespace),
 		http.Context(options.Context),