support GOBUILD_OPT pass to Makefile (matrixorigin#21221)

support "make GOBUILD_OPT=-cover" to allow build with coverage test.

Approved by: @zhangxu19830126

Makefile

@@ -102,6 +102,10 @@ CGO_OPTS :=
 GOLDFLAGS=-ldflags="-X '$(GO_MODULE)/pkg/version.GoVersion=$(GO_VERSION)' -X '$(GO_MODULE)/pkg/version.BranchName=$(BRANCH_NAME)' -X '$(GO_MODULE)/pkg/version.CommitID=$(LAST_COMMIT_ID)' -X '$(GO_MODULE)/pkg/version.BuildTime=$(BUILD_TIME)' -X '$(GO_MODULE)/pkg/version.Version=$(MO_VERSION)'"
 TAGS :=
 
+ifeq ($(GOBUILD_OPT),)
+	GOBUILD_OPT :=
+endif
+
 .PHONY: cgo
 cgo:
 	@(cd cgo; ${MAKE} ${CGO_DEBUG_OPT})
@@ -110,7 +114,7 @@ cgo:
 .PHONY: build
 build: config
 	$(info [Build binary])
-	$(CGO_OPTS) go build $(TAGS) $(RACE_OPT) $(GOLDFLAGS) $(DEBUG_OPT) -o $(BIN_NAME) ./cmd/mo-service
+	$(CGO_OPTS) go build $(TAGS) $(RACE_OPT) $(GOLDFLAGS) $(DEBUG_OPT) $(GOBUILD_OPT) -o $(BIN_NAME) ./cmd/mo-service
 
 .PHONY: musl-install
 musl-install:
@@ -135,7 +139,7 @@ musl: override TAGS := -tags musl
 musl: musl-install musl-cgo config
 musl:
 	$(info [Build binary(musl)])
-	$(CGO_OPTS) go build $(TAGS) $(RACE_OPT) $(GOLDFLAGS) $(DEBUG_OPT) -o $(BIN_NAME) ./cmd/mo-service
+	$(CGO_OPTS) go build $(TAGS) $(RACE_OPT) $(GOLDFLAGS) $(DEBUG_OPT) $(GOBUILD_OPT) -o $(BIN_NAME) ./cmd/mo-service
 
 # build mo-tool
 .PHONY: mo-tool