Add script to gen go.mod

gen-go-mod.sh

+#!/bin/bash
+set -e -x
+
+VER=$1
+pushd staging/src/k8s.io
+LIST=$(echo *)
+popd
+
+for i in $LIST; do
+    pushd staging/src/k8s.io/$i
+    rm -f go.mod
+    git checkout Godeps || true
+    go mod init k8s.io/$i
+    rm -rf Godeps
+
+    echo 'require (' >> go.mod
+    for j in $LIST; do
+        echo "k8s.io/$j kubernetes-$VER" >> go.mod
+    done
+    echo ')' >> go.mod
+
+    echo 'replace (' >> go.mod
+    for j in $LIST; do
+        echo "k8s.io/$j kubernetes-$VER => ../$j" >> go.mod
+    done
+    echo ')' >> go.mod
+
+    popd
+done
+
+again=true
+while [ $again = "true" ]; do
+    again=false
+    for i in $LIST; do
+        pushd staging/src/k8s.io/$i
+        go mod tidy || again=true
+        popd
+    done
+done
+
+rm -f go.mod
+git checkout Godeps || true
+go mod init k8s.io/kubernetes
+echo 'require (' >> go.mod
+for i in $LIST; do
+    echo "k8s.io/$i kubernetes-$VER" >> go.mod
+done
+echo ')' >> go.mod
+
+echo 'replace (' >> go.mod
+for i in $LIST; do
+    echo "k8s.io/$i kubernetes-$VER => ./staging/src/k8s.io/$i" >> go.mod
+done
+echo ')' >> go.mod
+
+cat >> go.mod << EOF
+require (
+	github.com/coreos/etcd v3.2.24+incompatible
+)
+replace (
+    github.com/coreos/etcd v3.2.24+incompatible => github.com/ibuildthecloud/etcd a7d7329fe0078ac4e461ce299524b874582ff354
+)
+EOF
+
+go mod tidy
+go mod vendor