Add stack for deploying Heat.

diff --git a/heat.yaml b/heat.yaml
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+++ b/heat.yaml
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+HeatTemplateFormatVersion: '2012-12-12'
+Description: 'HEAT Template - Heat Engine and API'
+Parameters:
+  KeyName: 
+    Description: Name of an existing EC2 KeyPair to enable SSH access to the instances
+    Type: String
+    Default: default
+  InstanceType:
+    Description: Use this flavor
+    Type: String
+    Default: bm.small
+  HeatUser:
+    Description: Heat database username.
+    Type: String
+    Default: heat
+  HeatEngineImage:
+    Type: String
+  HeatApiImage:
+    Type: String
+  RabbitMQHost:
+    Description: Host for RabbitMQ
+    Type: String
+  RabbitMQPassword:
+    Description: Password for RabbitMQ
+    Type: String
+  ApiGroupSize:
+    Description: How many API nodes to run
+    Type: Integer
+    Default: 1
+  AvailabilityZones:
+    Type: List
+    Default: [ 1 ]
+Resources:
+  EngineAccessPolicy:
+    Type: OS::Heat::AccessPolicy
+    Properties:
+      AllowedResources: [ HeatEngine ]
+  EngineUser:
+    Type: AWS::IAM::User
+    Properties:
+      Policies: [ { Ref: EngineAccessPolicy } ]
+  EngineKey:
+    Type: AWS::IAM::AccessKey
+    Properties:
+      UserName:
+        Ref: EngineUser
+  ApiAccessPolicy:
+    Type: OS::Heat::AccessPolicy
+    Properties:
+      AllowedResources: [ HeatAPILaunch ]
+  ApiUser:
+    Type: AWS::IAM::User
+    Properties:
+      Policies: [ { Ref: ApiAccessPolicy } ]
+  ApiKey:
+    Type: AWS::IAM::AccessKey
+    Properties:
+      UserName:
+        Ref: ApiUser
+  HeatAPILaunch:
+    Type: AWS::AutoScaling::LaunchConfiguration
+    Metadata:
+      OpenStack::ImageBuilder::Elements: [ heat-api ]
+      OpenStack::Config:
+        heat:
+          rpc_backend: heat.openstack.common.rpc.impl_kombu
+          rabbit:
+            host: {Ref: RabbitMQHost}
+            password: {Ref: RabbitMQPassword}
+          access_key_id:
+            Ref: ApiKey
+          secret_key:
+            Fn::GetAtt: [ ApiKey, SecretAccessKey ]
+          stack:
+            name: {Ref: 'AWS::StackName'}
+            region: {Ref: 'AWS::Region'}
+          refresh:
+            - resource: HeatAPILaunch
+    Properties:
+      ImageId:
+        {Ref: HeatApiImage}
+      InstanceType: {Ref: InstanceType}
+      KeyName: {Ref: KeyName}
+      UserData: "#!/bin/bash\ntouch /tmp/userdata-finished\necho Userdata finished $(date)\n"
+  HeatAPI:
+    Type: OS::Heat::InstanceGroup
+    Properties:
+      LaunchConfiguration: {Ref: HeatApiLaunch}
+      Size: {Ref: ApiGroupSize}
+      AvailabilityZones: {Ref: AvailabilityZones}
+  HeatEngine:
+    Type: AWS::EC2::Instance
+    Properties:
+      ImageId:
+        {Ref: HeatEngineImage}
+    Metadata:
+      OpenStack::Config:
+        heat:
+          rpc_backend: heat.openstack.common.rpc.impl_kombu
+          rabbit:
+            host: {Ref: RabbitMQHost}
+            password: {Ref: RabbitMQPassword}
+          access_key_id:
+            Ref: EngineKey
+          secret_key:
+            Fn::GetAtt: [ EngineKey, SecretAccessKey ]
+          stack:
+            name: {Ref: 'AWS::StackName'}
+            region: {Ref: 'AWS::Region'}
+          refresh:
+            - resource: HeatEngine