Update to use fixed golangci-lint 1.21.0

go.sum

@@ -23,6 +23,7 @@ github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:l
 github.com/auth0/go-jwt-middleware v0.0.0-20170425171159-5493cabe49f7/go.mod h1:LWMyo4iOLWXHGdBki7NIht1kHru/0wM179h+d3g8ATM=
 github.com/aws/aws-k8s-tester/e2e/tester v0.0.0-20190907061006-260b0e114d90 h1:FRpHLOVjM/FO/sl84ilNQWATtRd1FR6uk7UUs8MUl5Y=
 github.com/aws/aws-k8s-tester/e2e/tester v0.0.0-20190907061006-260b0e114d90/go.mod h1:xCa3ZGICI7/IqtJdYjEsM3QL9vwlLHxgwSA/MD09Zgo=
+github.com/aws/aws-sdk-go v1.16.26/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.23.21 h1:eVJT2C99cAjZlBY8+CJovf6AwrSANzAcYNuxdCB+SPk=
 github.com/aws/aws-sdk-go v1.23.21/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/bazelbuild/bazel-gazelle v0.0.0-20181012220611-c728ce9f663e/go.mod h1:uHBSeeATKpVazAACZBDPL/Nk/UhQDDsJWDlqYJo8/Us=

hack/verify-golint

@@ -16,12 +16,11 @@
 
 set -euo pipefail
 
-if ! which golangci-lint > /dev/null; then
-    echo "Cannot find golangci-lint. Installing golangci-lint..."
-    go get -v github.com/golangci/golangci-lint/cmd/golangci-lint
-fi
+echo "Installing golangci-lint..."
+curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh| sh -s v1.21.0
 
-golangci-lint run --deadline=10m 
+echo "Running golangci-lint..."
+./bin/golangci-lint run --deadline=10m
 
 echo "Congratulations! All Go source files have been linted."