*: test with Go 1.12.9

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>

.travis.yml

@@ -6,7 +6,7 @@ sudo: required
 services: docker
 
 go:
-- 1.12.8
+- 1.12.9
 
 env:
 - GO111MODULE=on
@@ -28,7 +28,7 @@ env:
 matrix:
   fast_finish: true
   allow_failures:
-  - go: 1.12.8
+  - go: 1.12.9
     env: TARGET=linux-386-unit
 
 install:

Makefile

@@ -50,7 +50,7 @@ docker-remove:
 
 
 
-GO_VERSION ?= 1.12.8
+GO_VERSION ?= 1.12.9
 ETCD_VERSION ?= $(shell git rev-parse --short HEAD || echo "GitNotFound")
 
 TEST_SUFFIX = $(shell date +%s | base64 | head -c 15)
@@ -64,11 +64,11 @@ endif
 
 
 # Example:
-#   GO_VERSION=1.12.8 make build-docker-test
+#   GO_VERSION=1.12.9 make build-docker-test
 #   make build-docker-test
 #
 #   gcloud docker -- login -u _json_key -p "$(cat /etc/gcp-key-etcd-development.json)" https://gcr.io
-#   GO_VERSION=1.12.8 make push-docker-test
+#   GO_VERSION=1.12.9 make push-docker-test
 #   make push-docker-test
 #
 #   gsutil -m acl ch -u allUsers:R -r gs://artifacts.etcd-development.appspot.com

tests/Dockerfile

@@ -32,7 +32,7 @@ RUN apt-get -y update \
 ENV GOROOT /usr/local/go
 ENV GOPATH /go
 ENV PATH ${GOPATH}/bin:${GOROOT}/bin:${PATH}
-ENV GO_VERSION 1.12.8
+ENV GO_VERSION REPLACE_ME_GO_VERSION
 ENV GO_DOWNLOAD_URL https://storage.googleapis.com/golang
 RUN rm -rf ${GOROOT} \
   && curl -s ${GO_DOWNLOAD_URL}/go${GO_VERSION}.linux-amd64.tar.gz | tar -v -C /usr/local/ -xz \