fix for docker/distribution checksum mismatch (#196)

Signed-off-by: Jacob Blain Christen <jacob@rancher.com>

Author: dweomer

go.mod

@@ -3,7 +3,7 @@ module github.com/rancher/system-upgrade-controller
 go 1.16
 
 require (
-	github.com/docker/distribution v2.8.0+incompatible
+	github.com/docker/distribution v2.8.1+incompatible
 	github.com/onsi/ginkgo v1.16.4
 	github.com/onsi/gomega v1.16.0
 	github.com/rancher/lasso v0.0.0-20210616224652-fc3ebd901c08
@@ -20,6 +20,7 @@ require (
 )
 
 replace (
+	github.com/docker/distribution => github.com/distribution/distribution v2.8.1+incompatible
 	github.com/rancher/system-upgrade-controller/pkg/apis => ./pkg/apis
 	k8s.io/api => github.com/k3s-io/kubernetes/staging/src/k8s.io/api v1.18.20-k3s1
 	k8s.io/apiextensions-apiserver => github.com/k3s-io/kubernetes/staging/src/k8s.io/apiextensions-apiserver v1.18.20-k3s1

go.sum

@@ -112,10 +112,9 @@ github.com/daviddengcn/go-colortext v0.0.0-20160507010035-511bcaf42ccd/go.mod h1
 github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
+github.com/distribution/distribution v2.8.1+incompatible h1:8iXUoOqRPx30bhzIEPUmNIqlmBlWdrieW1bqr6LrX30=
+github.com/distribution/distribution v2.8.1+incompatible/go.mod h1:EgLm2NgWtdKgzF9NpMzUKgzmR7AMmb0VQi2B+ZzDRjc=
 github.com/dnaeon/go-vcr v1.0.1/go.mod h1:aBB1+wY4s93YsC3HHjMBMrwTj2R9FHDzUr9KyGc8n1E=
-github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/distribution v2.8.0+incompatible h1:l9EaZDICImO1ngI+uTifW+ZYvvz7fKISBAKpg+MbWbY=
-github.com/docker/distribution v2.8.0+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v0.7.3-0.20190327010347-be7ac8be2ae0/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.3.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=