deploy: Add update_image.sh

Signed-off-by: Sheng Yang <sheng.yang@rancher.com>

deploy/update_image.sh

+#!/bin/bash
+
+set -e
+
+base="${GOPATH}/src/github.com/rancher/local-path-provisioner"
+files=`find ${base}/deploy/ |grep yaml |sort`
+
+project="rancher\/local-path-provisioner"
+latest=`cat ${base}/bin/latest_image`
+echo latest image ${latest}
+
+escaped_image=${latest//\//\\\/}
+
+for f in $files
+do
+	sed -i "s/image\:\ ${project}:.*/image\:\ ${escaped_image}/g" $f
+	sed -i "s/-\ ${project}:.*/-\ ${escaped_image}/g" $f
+done
+