Add code that shows how to create an instance

This creates an instance with a keypair, and saves the private key to
/tmp/private_key.

Then:
ssh -i /tmp/private_key 10.0.0.x where x is the IP address

Signed-off-by: Steven Dake <sdake@redhat.com>

tools/experimental_create.py

@@ -0,0 +1,63 @@
+#!/usr/bin/python
+
+import eventlet
+from eventlet.green import socket
+import libssh2
+import time
+import os
+import random
+import base64
+import uuid
+import M2Crypto
+from novaclient.v1_1 import client
+
+def instance_start(instance_name, image_name, flavor_name):
+    """
+    Method to start an instance
+    """
+    def _null_callback(p, n, out):
+        """
+        Method to silence the default M2Crypto.RSA.gen_key output.
+        """
+        pass
+
+    private_key = M2Crypto.RSA.gen_key(2048, 65537, _null_callback)
+
+    # this is the binary public key, in ssh "BN" (BigNumber) MPI format.
+    # The ssh BN MPI format consists of 4 bytes that describe the length
+    # of the following data, followed by the data itself in big-endian
+    # format.  The start of the string is 0x0007, which represent the 7
+    # bytes following that make up 'ssh-rsa'.  The key exponent and
+    # modulus as fetched out of M2Crypto are already in MPI format, so
+    # we can just use them as-is.  We then have to base64 encode the
+    # result, add a little header information, and then we have a
+    # full public key.
+    username = os.environ['OS_USERNAME']
+    password = os.environ['OS_PASSWORD']
+    tenant = os.environ['OS_TENANT_NAME']
+    auth_url = os.environ['OS_AUTH_URL']
+    nova_client = client.Client(username, password, tenant, auth_url, service_type='compute', service_name='nova')
+    public_key_bn = '\x00\x00\x00\x07' + 'ssh-rsa' + private_key.e + private_key.n
+    public_key = 'ssh-rsa %s support@heat-api.org\n' % (base64.b64encode(public_key_bn))
+    private_key.save_key('/tmp/private_key', cipher=None)
+    random_uuid = uuid.uuid4()
+    key_uuid = uuid.uuid3(random_uuid, '%s %s %s' % (instance_name, image_name, flavor_name))
+    nova_client.keypairs.create(str(key_uuid), public_key)
+
+    image_list = nova_client.images.list()
+    for o in image_list:
+        if getattr(o, 'name', '') == image_name:
+            image_id = o.id #getattr(o, 'id', '')
+
+    flavor_list = nova_client.flavors.list()
+    for o in flavor_list:
+        if getattr(o, 'name', '') == flavor_name:
+            flavor_id = getattr(o, 'id', '')
+
+    nova_client.servers.create(name=instance_name, image=image_id,
+	flavor=flavor_id, key_name=str(key_uuid))
+
+    return private_key
+
+instance_start('instance-F16-test', 'F16-x86_64', "m1.tiny")
+