Refactor step_export and the driver interface to move the ovftool call
into the vmware driver. This refactor allows us to add meaningful tests
to step_export, which I have also added here.
withouth this fix we would have had to do
```hcl
temporary_iam_instance_profile_policy_document {
statement {
action = ["*"]
effect = "Allow"
resource = ["*"]
}
version = "2012-10-17"
}
```
instead of the same document but with capitalised fields
PutRolePolicy & AddRoleToInstanceProfile are eventually consistent but it is not possible to wait for them to be done here: https://github.com/hashicorp/packer/blob/0785c2f6fca9c22bf25528e0176042799dd79df9/builder/amazon/common/step_iam_instance_profile.go#L117-L134 which was causing the `CreateFleet` to fail (100% for me). So for now we retry a bit later. Waiting 5 seconds after the previously linked code also fixed this.
Test file:
```json
{
"builders": [
{
"type": "amazon-ebs",
"region": "eu-west-1",
"ami_name": "ubuntu-16.04 test {{timestamp}}",
"ami_description": "Ubuntu 16.04 LTS - expand root partition",
"source_ami_filter": {
"filters": {
"virtualization-type": "hvm",
"name": "ubuntu/images/*/ubuntu-xenial-16.04-amd64-server-*",
"root-device-type": "ebs"
},
"owners": [
"099720109477"
],
"most_recent": true
},
"spot_price": "0.03",
"spot_instance_types": [
"t2.small"
],
"encrypt_boot": true,
"ssh_username": "ubuntu",
"ssh_interface": "session_manager",
"temporary_iam_instance_profile_policy_document": {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"*"
],
"Resource": "*"
}
]
},
"communicator": "ssh"
}
]}
```
Megan Marsh
Marin Salinas
Adrien Delorme
Sylvia Moss
PacoDw