Updates existinginfra dependency for seed node

ExistingInfra provider updated how the annotation is added to the seed
node.  We need that change here.

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.6.1
 	github.com/thanhpk/randstr v1.0.4
-	github.com/weaveworks/cluster-api-provider-existinginfra v0.0.3-0.20201014233641-727a85ff4e68
+	github.com/weaveworks/cluster-api-provider-existinginfra v0.0.3-0.20201020203221-5ac2786b616c
 	github.com/weaveworks/footloose v0.0.0-20200609124411-8f3df89ea188
 	github.com/weaveworks/go-checkpoint v0.0.0-20170503165305-ebbb8b0518ab
 	github.com/weaveworks/launcher v0.0.0-20180824102238-59a4fcc32c9c
@@ -71,4 +71,5 @@ replace (
 	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.18.5
 	k8s.io/sample-cli-plugin => k8s.io/sample-cli-plugin v0.18.5
 	k8s.io/sample-controller => k8s.io/sample-controller v0.18.5
+
 )

go.sum

@@ -847,6 +847,8 @@ github.com/vishvananda/netns v0.0.0-20171111001504-be1fbeda1936/go.mod h1:ZjcWmF
 github.com/vmware/govmomi v0.20.3/go.mod h1:URlwyTFZX72RmxtxuaFL2Uj3fD1JTvZdx59bHWk6aFU=
 github.com/weaveworks/cluster-api-provider-existinginfra v0.0.3-0.20201014233641-727a85ff4e68 h1:TX1oAiNhJultslGlZ0d5wiuz8mDAF6tQDI3/fCG2UQ0=
 github.com/weaveworks/cluster-api-provider-existinginfra v0.0.3-0.20201014233641-727a85ff4e68/go.mod h1:UZkF4dw1GEm5doPVqh1cpoONk/LYQ4HAgGm9PpDUwDE=
+github.com/weaveworks/cluster-api-provider-existinginfra v0.0.3-0.20201020203221-5ac2786b616c h1:8J+mfQQAhhrMeyClwpajKEUheagHkMBWRHiwBBxcZNU=
+github.com/weaveworks/cluster-api-provider-existinginfra v0.0.3-0.20201020203221-5ac2786b616c/go.mod h1:UZkF4dw1GEm5doPVqh1cpoONk/LYQ4HAgGm9PpDUwDE=
 github.com/weaveworks/footloose v0.0.0-20200609124411-8f3df89ea188 h1:BuiVM+91YRjWUSMvF93A7Sm7s7IHrxjrPcc/5boO2V0=
 github.com/weaveworks/footloose v0.0.0-20200609124411-8f3df89ea188/go.mod h1:nxDdCjg1kb5+luh4mUCp+mtBZIWrhzoLIArrD99y+Sc=
 github.com/weaveworks/go-checkpoint v0.0.0-20170503165305-ebbb8b0518ab h1:mW+hgchD9qUUBqnuaDBj7BkcpFPk/FxeFcUFI5lvvUw=