release-tools: update

Author: Mario Valderrama

release-tools/prow.sh

@@ -199,7 +199,7 @@ kindest/node:v1.18.20@sha256:738cdc23ed4be6cc0b7ea277a2ebcc454c8373d7d8fb991a7fc
 # If the deployment script is called with CSI_PROW_TEST_DRIVER=<file name> as
 # environment variable, then it must write a suitable test driver configuration
 # into that file in addition to installing the driver.
-configvar CSI_PROW_DRIVER_VERSION "v1.12.0" "CSI driver version"
+configvar CSI_PROW_DRIVER_VERSION "v1.15.0" "CSI driver version"
 configvar CSI_PROW_DRIVER_REPO https://github.com/kubernetes-csi/csi-driver-host-path "CSI driver repo"
 configvar CSI_PROW_DEPLOYMENT "" "deployment"
 configvar CSI_PROW_DEPLOYMENT_SUFFIX "" "additional suffix in kubernetes-x.yy[suffix].yaml files"
@@ -441,7 +441,8 @@ run_with_go () {
     else
         version=local
     fi
-    GOTOOLCHAIN=$version run "$@"
+    # Set GOMODCACHE to make sure Kubernetes does not need to download again.
+    GOTOOLCHAIN=$version GOMODCACHE="$(go env GOMODCACHE)" run "$@"
 }
 
 # Ensure that we have the desired version of kind.
@@ -624,7 +625,7 @@ start_cluster () {
             go_version="$(go_version_for_kubernetes "${CSI_PROW_WORK}/src/kubernetes" "$version")" || die "cannot proceed without knowing Go version for Kubernetes"
             # Changing into the Kubernetes source code directory is a workaround for https://github.com/kubernetes-sigs/kind/issues/1910
             # shellcheck disable=SC2046
-            (cd "${CSI_PROW_WORK}/src/kubernetes" && run_with_go "$go_version" kind build node-image --image csiprow/node:latest --kube-root "${CSI_PROW_WORK}/src/kubernetes") || die "'kind build node-image' failed"
+            (cd "${CSI_PROW_WORK}/src/kubernetes" && run_with_go "$go_version" kind build node-image "${CSI_PROW_WORK}/src/kubernetes" --image csiprow/node:latest) || die "'kind build node-image' failed"
             csi_prow_kind_have_kubernetes=true
         fi
         image="csiprow/node:latest"