Remove vendor directory

* Bump version for aws-k8s-test
* Turn on GO mod in integration test

.gitignore

@@ -18,3 +18,6 @@ Vagrantfile
 
 # vim
 *.swp
+
+# go
+./vendor

.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

@@ -18,15 +18,18 @@ 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:
 # $(shell curl -s --request GET --url https://api.github.com/repos/aws/aws-k8s-tester/releases/latest | jq -r '.tag_name? // "<current version number>"')
-AWS_K8S_TESTER_VERSION?=$(shell curl -s --request GET --url https://api.github.com/repos/aws/aws-k8s-tester/tags | jq -r '.[0]?.name // "0.2.0"')
+AWS_K8S_TESTER_VERSION?=$(shell curl -s --request GET --url https://api.github.com/repos/aws/aws-k8s-tester/tags | jq -r '.[0]?.name // "0.2.5"')
 AWS_K8S_TESTER_OS_ARCH?=$(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}

hack/test-integration.sh

@@ -21,5 +21,6 @@ if ! [[ "$0" =~ hack/test-integration.sh ]]; then
   exit 127
 fi
 
+export GO111MODULE=on
 go test -c ./tests/integration/... -o bin/integration.test && \
   sudo -E bin/integration.test -test.v -ginkgo.v