terraform/builtin
Paul Stack 2a7ab027f4 provider/aws: Only call replace Iam Instance Profile on existing (#12922)
machines

Fixes: #12898

The way aws_instance works is that we call the Create func then the
Update func then the Read func. The way the work to implement the change
to iam_instance_profile was added meant that when a machine was created
with an iam_instance_profile, it would then try and update that
iam_instance_profile because the state hadn't been updated at that point

We have changed the Update func to only check for the change to
iam_instance_profile when it *is an existing machine* - this will solve
the problem of those bringing up new machines and getting hit with the
permissions error

As requested, added a test that adds an IAM Instance Profile from
creation

```
% make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSInstance_withIamInstanceProfile'
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/03/21 17:51:32 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSInstance_withIamInstanceProfile -timeout 120m
=== RUN   TestAccAWSInstance_withIamInstanceProfile
--- PASS: TestAccAWSInstance_withIamInstanceProfile (154.29s)
PASS
ok  	github.com/hashicorp/terraform/builtin/providers/aws	154.325s
```
2017-03-21 20:26:41 +02:00
..
bins New Provider: Spotinst (#5001) 2017-02-22 22:57:16 +02:00
providers provider/aws: Only call replace Iam Instance Profile on existing (#12922) 2017-03-21 20:26:41 +02:00
provisioners remove log.Fatal from test 2017-02-24 18:48:48 -05:00