Add script to deploy into a single node minikube instance

The script starts a minikube instance with a special minikube.iso
that includes heketi prerequirements, that are missing in the stock
minikube.iso: dm_* modules in the kernel, glusterfs and the xfs
tools.  It is created from this minikube fork-branch, which has been
created for this change:
https://github.com/ansiwen/minikube/tree/gluster-iso

After that it creates a block device image under
/mnt/vda1/heketi-bricks.img that is connected to /dev/loop1.  Finally
gk-deploy is started in the single-node mode on top of minikube.

deploy/gk-deploy-minikube

@@ -0,0 +1,30 @@
+#!/bin/bash
+# Copyright (c) 2018 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+SCRIPT_DIR="$(cd "$(dirname "${0}")" && pwd)"
+TOPOLOGY='topology-minikube.json'
+
+set -ex
+
+minikube start --vm-driver kvm2 --network-plugin cni --iso-url https://github.com/ansiwen/minikube/releases/download/v0.27.0-gluster/minikube-gluster.iso
+
+minikube ssh "\
+	sudo truncate -s 10G /mnt/vda1/heketi-bricks.img \
+	&& sudo losetup /dev/loop1 /mnt/vda1/heketi-bricks.img \
+	&& sudo pvcreate /dev/loop1 \
+"
+
+$SCRIPT_DIR/gk-deploy --yes --single-node --cli kubectl --deploy-gluster $SCRIPT_DIR/$TOPOLOGY

deploy/topology-minikube.json

@@ -0,0 +1,24 @@
+{
+  "clusters": [
+    {
+      "nodes": [
+        {
+          "node": {
+            "hostnames": {
+              "manage": [
+                "minikube"
+              ],
+              "storage": [
+                "172.17.0.1"
+              ]
+            },
+            "zone": 1
+          },
+          "devices": [
+            "/dev/loop1"
+          ]
+        }
+      ]
+    }
+  ]
+}