update go import path. (#3)

* update go import path.

Signed-off-by: morvencao <lcao@redhat.com>

* allow override image name.

Signed-off-by: morvencao <lcao@redhat.com>

Author: morvencao

Makefile

@@ -19,7 +19,7 @@ KUSTOMIZE_VERSION?=v3.5.4
 KUSTOMIZE_ARCHIVE_NAME?=kustomize_$(KUSTOMIZE_VERSION)_$(GOHOSTOS)_$(GOHOSTARCH).tar.gz
 kustomize_dir:=$(dir $(KUSTOMIZE))
 
-IMAGE = quay.io/open-cluster-management/multicluster-mesh-addon:latest
+IMAGE ?= quay.io/open-cluster-management/multicluster-mesh-addon:latest
 
 all: build
 .PHONY: all