provider/aws: Add support description to aws_iam_role

[minamijoyo]

Fixes #14198

$ make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSRole_'
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/05/04 23:02:49 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSRole_ -timeout 120m
=== RUN   TestAccAWSRole_basic
--- PASS: TestAccAWSRole_basic (20.59s)
=== RUN   TestAccAWSRole_namePrefix
--- PASS: TestAccAWSRole_namePrefix (92.25s)
=== RUN   TestAccAWSRole_testNameChange
--- PASS: TestAccAWSRole_testNameChange (51.13s)
=== RUN   TestAccAWSRole_badJSON
--- PASS: TestAccAWSRole_badJSON (0.01s)
PASS
ok      github.com/hashicorp/terraform/builtin/providers/aws    164.009s

[stack72]

Hi @minamijoyo

Thanks for the fast work here. I made 1 small change in fff5fed
Apart from that, it's all good!

% make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSRole_'                                              
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/05/04 18:45:02 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSRole_ -timeout 120m
=== RUN   TestAccAWSRole_basic
--- PASS: TestAccAWSRole_basic (21.43s)
=== RUN   TestAccAWSRole_namePrefix
--- PASS: TestAccAWSRole_namePrefix (19.77s)
=== RUN   TestAccAWSRole_testNameChange
--- PASS: TestAccAWSRole_testNameChange (44.71s)
=== RUN   TestAccAWSRole_badJSON
--- PASS: TestAccAWSRole_badJSON (0.00s)
PASS
ok  	github.com/hashicorp/terraform/builtin/providers/aws	85.944s

Thanks

@stack72

[minamijoyo]

@stack72 Thank you for your support!

[ghost]

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