AWS race conditions in creating/using resources with vpc.py create_iam_profile()

[dougtoppin]

I've bumped into another AWS race condition associated with creating the vpc and related resources (train -vk). This is in vpc.py create_iam_profile()

I added a 5 second sleep between each operation and it solved the issue.
I will work up a better approach and eventual PR but just wanted to pass this along.

The error looks like this:

dtoppintest1-dtoppintest1:us-east-1:~$ train -vk
Creating AWS VPC ...
Creating IAM Profile: dtoppintest1-dtoppintest1 ...
Traceback (most recent call last):
  File "/home/train/bin/train", line 111, in <module>
    process()
  File "/home/train/bin/train", line 74, in process
    vpc.create_vpc()
  File "/home/train/train/vpc/vpc.py", line 462, in create_vpc
    create_iam_profile()
  File "/home/train/train/vpc/vpc.py", line 265, in create_iam_profile
    instance_profile = conn.create_instance_profile(IAM_PROFILE)
  File "/usr/local/lib/python2.7/site-packages/boto/iam/connection.py", line 1103,
    in create_instance_profile
    return self.get_response('CreateInstanceProfile', params)
  File "/usr/local/lib/python2.7/site-packages/boto/iam/connection.py", line 85, in get_response
    response = self.make_request(action, params, path, verb)
  File "/usr/local/lib/python2.7/site-packages/boto/connection.py", line 1116, in make_request
    return self._mexe(http_request)
  File "/usr/local/lib/python2.7/site-packages/boto/connection.py", line 1030, in _mexe
    raise ex
socket.gaierror: [Errno -2] Name or service not known