vendor update for CSI 0.3.0

vendor/k8s.io/kubernetes/cluster/gce/config-common.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2016 The Kubernetes Authors.
 #
@@ -98,6 +98,19 @@ function get-cluster-ip-range {
   echo "${suggested_range}"
 }
 
+# Calculate ip alias range based on max number of pods.
+# Let pow be the smallest integer which is bigger or equal to log2($1 * 2).
+# (32 - pow) will be returned.
+#
+# $1: The number of max pods limitation.
+function get-alias-range-size() {
+  for pow in {0..31}; do
+    if (( 1 << $pow >= $1 * 2 )); then
+      echo $((32 - pow))
+      return 0
+    fi
+  done
+}
 # NOTE: Avoid giving nodes empty scopes, because kubelet needs a service account
 # in order to initialize properly.
 NODE_SCOPES="${NODE_SCOPES:-monitoring,logging-write,storage-ro}"