Boot config env for RDO on centos7

This adds an environment centos7_rdo_env.yaml which defines
Heat::InstallConfigAgent to install agent packages from the RDO
package repository.

Change-Id: I28b4315ec0261598867d7632f4f75774f3ef8e60

hot/software-config/boot-config/centos7_rdo_env.yaml

@@ -0,0 +1,7 @@
+# Installs software-config agent on boot for fedora with yum
+
+parameters:
+  image: CentOS-7-x86_64-GenericCloud
+
+resource_registry:
+  "Heat::InstallConfigAgent": templates/install_config_agent_centos7_rdo.yaml

hot/software-config/boot-config/templates/fragments/install_config_agent_rdo.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -eux
+
+yum -y install https://www.rdoproject.org/repos/rdo-release.rpm
+yum -y install python-zaqarclient os-collect-config os-apply-config os-refresh-config dib-utils

hot/software-config/boot-config/templates/install_config_agent_centos7_rdo.yaml

@@ -0,0 +1,39 @@
+heat_template_version: 2014-10-16
+
+resources:
+
+  install_config_agent_rdo:
+    type: "OS::Heat::SoftwareConfig"
+    properties:
+      group: ungrouped
+      config: {get_file: fragments/install_config_agent_rdo.sh}
+
+  configure_config_agent:
+    type: "OS::Heat::SoftwareConfig"
+    properties:
+      group: ungrouped
+      config:
+        str_replace:
+          params:
+            $heat_config_script: {get_file: ../../elements/heat-config/os-refresh-config/configure.d/55-heat-config}
+            $hook_script: {get_file: ../../elements/heat-config-script/install.d/hook-script.py}
+            $heat_config_notify: {get_file: ../../elements/heat-config/bin/heat-config-notify}
+          template: {get_file: fragments/configure_config_agent.sh}
+
+  start_config_agent:
+    type: "OS::Heat::SoftwareConfig"
+    properties:
+      group: ungrouped
+      config: {get_file: fragments/start_config_agent.sh}
+
+  install_config_agent:
+    type: "OS::Heat::MultipartMime"
+    properties:
+      parts:
+      - config: {get_resource: install_config_agent_rdo}
+      - config: {get_resource: configure_config_agent}
+      - config: {get_resource: start_config_agent}
+
+outputs:
+  config:
+    value: {get_resource: install_config_agent}