[version] upgrade to v3.1

Author: jackblack369

Makefile

@@ -26,7 +26,7 @@ OUTPUT := bin/dingoadm
 # build flags
 LDFLAGS := -s -w
 LDFLAGS += -extldflags "-static -fpic"
-LDFLAGS += -X github.com/dingodb/dingoadm/cli/cli.Version=2.2
+LDFLAGS += -X github.com/dingodb/dingoadm/cli/cli.Version=3.1
 LDFLAGS += -X github.com/dingodb/dingoadm/cli/cli.CommitId=$(shell git rev-parse --short HEAD)
 LDFLAGS += -X github.com/dingodb/dingoadm/cli/cli.BuildTime=$(shell date +%Y-%m-%dT%H:%M:%S)