fix travis

Author: lucacome

.travis.yml

@@ -12,4 +12,4 @@ before_install:
 - if [[ "${TRAVIS_PULL_REQUEST_SLUG}" == "nginxinc/nginx-asg-sync" || "${TRAVIS_PULL_REQUEST}" == "false" ]]; then
   wget https://github.com/fossas/fossa-cli/releases/download/v1.0.27/fossa-cli_1.0.27_linux_amd64.tar.gz && tar xzf fossa-cli_1.0.27_linux_amd64.tar.gz
   && ./fossa init
-  && FOSSA_API_KEY=${fossapush} ./fossa analyze -t nginx-asg-sync -b ${TRAVIS_BRANCH} ; fi
+  && GO111MODULE=on FOSSA_API_KEY=${fossapush} ./fossa analyze -t nginx-asg-sync -b ${TRAVIS_BRANCH} ; fi

Makefile

@@ -1,14 +1,15 @@
 GO_DOCKER_RUN = docker run --rm -v $(shell pwd):/go/src/github.com/nginxinc/nginx-asg-sync -v $(shell pwd)/build_output:/build_output -w /go/src/github.com/nginxinc/nginx-asg-sync/cmd/sync
 GOLANG_CONTAINER = golang:1.14
 BUILD_IN_CONTAINER = 1
+GOFLAGS ?= -mod=vendor
 
 all: amazon centos7 ubuntu-xenial amazon2 ubuntu-bionic
 
 test:
 ifeq ($(BUILD_IN_CONTAINER),1)
 	$(GO_DOCKER_RUN) $(GOLANG_CONTAINER) go test
 else
-	go test ./...
+	GO111MODULE=on GOFLAGS='$(GOFLAGS)' go test ./...
 endif
 
 lint:
@@ -18,7 +19,7 @@ compile: test
 ifeq ($(BUILD_IN_CONTAINER),1)
 	$(GO_DOCKER_RUN) $(GOLANG_CONTAINER) go build -o /build_output/nginx-asg-sync
 else
-	go build -o ./build_output/nginx-asg-sync github.com/nginxinc/nginx-asg-sync/cmd/sync
+	GO111MODULE=on GOFLAGS='$(GOFLAGS)' go build -o ./build_output/nginx-asg-sync github.com/nginxinc/nginx-asg-sync/cmd/sync
 endif
 
 amazon: compile