Add heat template for creating the stack

This stack will be shared by all the tests we'll create.

Also added a README.

Change-Id: I53e5aa573e462babaa559d5d7c736b6cc04315a7

README.rst

@@ -0,0 +1,11 @@
+======
+Tobiko
+======
+
+To run pre-upgrade tests:
+
+    tempest run --regex pre
+
+To run post-upgrade tests:
+
+    tempest run --regex post

tobiko/tests/scenario/templates/fip.yaml

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+heat_template_version: 2013-05-23
+
+description: |
+  Template to create an instance and check connectivity to it
+
+parameters:
+  flavor:
+    type: string
+  image:
+    type: string
+  subnet_cidr:
+    type: string
+    default: 190.40.2.0/24 
+  public_net:
+    type: string
+    default: public
+  private_net:
+    type: string
+    default: heat-net
+  dns_servers:
+    type: comma_delimited_list
+    default: ["8.8.8.8", "8.8.4.4"]
+
+resources:
+  sg:
+    type: OS::Neutron::SecurityGroup
+    properties:
+      name: sg
+      description: Security group to allow ICMP and SSH
+      rules:
+      - protocol: icmp
+      - protocol: tcp
+        port_range_min: 22
+        port_range_max: 22
+
+  floating_ip:
+    type: OS::Neutron::FloatingIP
+    properties:
+      floating_network: {get_param: public_net}
+
+  network:
+    type: OS::Neutron::Net
+
+  subnet:
+    type: OS::Neutron::Subnet
+    properties:
+      network: {get_resource: network}
+      ip_version: 4
+      cidr: {get_param: subnet_cidr}
+      dns_nameservers: {get_param: dns_servers}
+
+  router:
+    type: OS::Neutron::Router
+    properties:
+      external_gateway_info:
+        network: {get_param: public_net}
+
+  router_interface:
+    type: OS::Neutron::RouterInterface
+    properties:
+      router: {get_resource: router}
+      subnet: {get_resource: subnet}
+
+  wait_handle:
+    type: OS::Heat::WaitConditionHandle
+
+  server:
+    type: OS::Nova::Server
+    properties:
+      image: {get_param: image}
+      flavor: {get_param: flavor}
+      networks:
+      - subnet: {get_resource: subnet}
+      security_groups:
+      - {get_resource: sg}
+
+  server_floating_ip_assoc:
+    type: OS::Neutron::FloatingIPAssociation
+    properties:
+      floatingip_id: {get_resource: floating_ip}
+      port_id: {get_attr: [server, addresses, {get_resource: network}, 0, port]}
+
+outputs:
+  server_ip:
+    value: {get_attr: [floating_ip, floating_ip_address]}