Remove vendor directory

.travis.yml

@@ -1,12 +1,11 @@
 language: go
 go_import_path: github.com/kubernetes-sigs/aws-ebs-csi-driver
-
+dist: xenial
 env:
   global:
-    - GO111MODULE=off
+    - GO111MODULE=on
 
 go:
-  - "1.10.x"
   - "1.11.4"
 
 before_install:

Makefile

@@ -18,6 +18,7 @@ VERSION=0.3.0-alpha
 GIT_COMMIT?=$(shell git rev-parse HEAD)
 BUILD_DATE?=$(shell date -u +"%Y-%m-%dT%H:%M:%SZ")
 LDFLAGS?="-X ${PKG}/pkg/driver.driverVersion=${VERSION} -X ${PKG}/pkg/driver.gitCommit=${GIT_COMMIT} -X ${PKG}/pkg/driver.buildDate=${BUILD_DATE} -s -w"
+GO111MODULE=on
 
 # Hard-coded version is needed in case GitHub API rate limit is exceeded.
 # TODO: When aws-k8s-tester becomes a full release (https://developer.github.com/v3/repos/releases/#get-the-latest-release), use:
@@ -27,6 +28,8 @@ AWS_K8S_TESTER_OS_ARCH?=$(shell go env GOOS)-amd64
 AWS_K8S_TESTER_DOWNLOAD_URL?=https://github.com/aws/aws-k8s-tester/releases/download/${AWS_K8S_TESTER_VERSION}/aws-k8s-tester-${AWS_K8S_TESTER_VERSION}-${AWS_K8S_TESTER_OS_ARCH}
 AWS_K8S_TESTER_PATH?=/tmp/aws-k8s-tester
 
+.EXPORT_ALL_VARIABLES:
+
 VPC_ID_FLAG=
 ifdef AWS_K8S_TESTER_VPC_ID
 	VPC_ID_FLAG=--vpc-id=${AWS_K8S_TESTER_VPC_ID}