update make

Signed-off-by: SammyOina <sammyoina@gmail.com>

Makefile

@@ -11,9 +11,15 @@ VERSION ?= $(shell git describe --abbrev=0 --tags)
 COMMIT ?= $(shell git rev-parse HEAD)
 TIME ?= $(shell date +%F_%T)
 
+ifneq ($(MF_BROKER_TYPE),)
+    MF_BROKER_TYPE := $(MF_BROKER_TYPE)
+else
+    MF_BROKER_TYPE=nats
+endif
+
 define compile_service
 	CGO_ENABLED=$(CGO_ENABLED) GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM) \
-	go build -mod=vendor -ldflags "-s -w \
+	go build -mod=vendor -tags $(MF_BROKER_TYPE) -ldflags "-s -w \
 	-X 'github.com/mainflux/mainflux.BuildTime=$(TIME)' \
 	-X 'github.com/mainflux/mainflux.Version=$(VERSION)' \
 	-X 'github.com/mainflux/mainflux.Commit=$(COMMIT)'" \