DO NOT MERGE: get kind fix for Kubernetes master image building

Author: msau42

release-tools/prow.sh

@@ -101,7 +101,7 @@ configvar CSI_PROW_GO_VERSION_GINKGO "${CSI_PROW_GO_VERSION_BUILD}" "Go version
 # kind version to use. If the pre-installed version is different,
 # the desired version is downloaded from https://github.com/kubernetes-sigs/kind/releases/download/
 # (if available), otherwise it is built from source.
-configvar CSI_PROW_KIND_VERSION v0.4.0 "kind"
+configvar CSI_PROW_KIND_VERSION 2555d8e09d5a77ee718414cec9f6083dfa028dc5 "kind"
 
 # ginkgo test runner version to use. If the pre-installed version is
 # different, the desired version is built from source.
@@ -379,8 +379,8 @@ install_kind () {
     if run curl --fail --location -o "${CSI_PROW_WORK}/bin/kind" "https://github.com/kubernetes-sigs/kind/releases/download/${CSI_PROW_KIND_VERSION}/kind-linux-amd64"; then
         chmod u+x "${CSI_PROW_WORK}/bin/kind"
     else
-        git_checkout https://github.com/kubernetes-sigs/kind "$GOPATH/src/sigs.k8s.io/kind" "${CSI_PROW_KIND_VERSION}" --depth=1 &&
-        run_with_go "${CSI_PROW_GO_VERSION_KIND}" go build -o "${CSI_PROW_WORK}/bin/kind" sigs.k8s.io/kind
+        git_checkout https://github.com/kubernetes-sigs/kind "${GOPATH}/src/sigs.k8s.io/kind" "${CSI_PROW_KIND_VERSION}" --depth=1 &&
+        (cd "${GOPATH}/src/sigs.k8s.io/kind" && make install INSTALL_DIR="${CSI_PROW_WORK}/bin")
     fi
 }
 
@@ -427,6 +427,27 @@ git_checkout () {
     (cd "$path" && run git clean -fdx) || die "failed to clean $path"
 }
 
+# This clones a repo ("https://github.com/kubernetes/kubernetes")
+# in a certain location ("$GOPATH/src/k8s.io/kubernetes") at
+# a the head of a specific branch (i.e., release-1.13, master).
+# The directory cannot exist.
+git_clone_branch () {
+    local repo path branch parent
+    repo="$1"
+    shift
+    path="$1"
+    shift
+    branch="$1"
+    shift
+
+    parent="$(dirname "$path")"
+    mkdir -p "$parent"
+    (cd "$parent" && run git clone --single-branch --branch "$branch" "$repo" "$path") || die "cloning $repo" failed
+    # This is useful for local testing or when switching between different revisions in the same
+    # repo.
+    (cd "$path" && run git clean -fdx) || die "failed to clean $path"
+}
+
 list_gates () (
     set -f; IFS=','
     # Ignore: Double quote to prevent globbing and word splitting.
@@ -472,25 +493,10 @@ start_cluster () {
             if [ "$version" = "latest" ]; then
                 version=master
             fi
-            git_checkout https://github.com/kubernetes/kubernetes "$GOPATH/src/k8s.io/kubernetes" "$version" --depth=1 || die "checking out Kubernetes $version failed"
-
-            # "kind build" and/or the Kubernetes build rules need at least one tag, which we don't have
-            # when doing a shallow fetch. Therefore we fake one:
-            # release-1.12 -> v1.12.0-release.<rev>.csiprow
-            # latest or <revision> -> v1.14.0-<rev>.csiprow
-            case "${CSI_PROW_KUBERNETES_VERSION}" in
-                release-*)
-                    # Ignore: See if you can use ${variable//search/replace} instead.
-                    # shellcheck disable=SC2001
-                    tag="$(echo "${CSI_PROW_KUBERNETES_VERSION}" | sed -e 's/release-\(.*\)/v\1.0-release./')";;
-                *)
-                    # We have to make something up. v1.0.0 did not work for some reasons.
-                    tag="v999.999.999-";;
-            esac
-            tag="$tag$(cd "$GOPATH/src/k8s.io/kubernetes" && git rev-list --abbrev-commit HEAD).csiprow"
-            (cd "$GOPATH/src/k8s.io/kubernetes" && run git tag -f "$tag") || die "git tag failed"
-            go_version="$(go_version_for_kubernetes "$GOPATH/src/k8s.io/kubernetes" "$version")" || die "cannot proceed without knowing Go version for Kubernetes"
-            run_with_go "$go_version" kind build node-image --type bazel --image csiprow/node:latest --kube-root "$GOPATH/src/k8s.io/kubernetes" || die "'kind build node-image' failed"
+            git_clone_branch https://github.com/kubernetes/kubernetes "${CSI_PROW_WORK}/src/kubernetes" "$version" || die "checking out Kubernetes $version failed"
+
+            go_version="$(go_version_for_kubernetes "${CSI_PROW_WORK}/src/kubernetes" "$version")" || die "cannot proceed without knowing Go version for Kubernetes"
+            run_with_go "$go_version" kind build node-image --type bazel --image csiprow/node:latest --kube-root "${CSI_PROW_WORK}/src/kubernetes" || die "'kind build node-image' failed"
             csi_prow_kind_have_kubernetes=true
         fi
         image="csiprow/node:latest"