Fixes:#10902
AWS introduced a change to the Mount Target DNS Name to remove the
availability_zone from it -
https://aws.amazon.com/about-aws/whats-new/2016/12/simplified-mounting-of-amazon-efs-file-systems/
This was because there used to be a limit of 1 mount target per AZ -
this has been raised.
```
% make testacc TEST=./builtin/providers/aws TESTARGS='-run=TestAccAWSEFSMountTarget_'
==> Checking that code complies with gofmt requirements...
go generate $(go list ./... | grep -v /terraform/vendor/)
2017/01/04 10:45:35 Generated command/internal_plugin_list.go
TF_ACC=1 go test ./builtin/providers/aws -v -run=TestAccAWSEFSMountTarget_ -timeout 120m
=== RUN TestAccAWSEFSMountTarget_importBasic
--- PASS: TestAccAWSEFSMountTarget_importBasic (236.19s)
=== RUN TestAccAWSEFSMountTarget_basic
--- PASS: TestAccAWSEFSMountTarget_basic (445.52s)
=== RUN TestAccAWSEFSMountTarget_disappears
--- PASS: TestAccAWSEFSMountTarget_disappears (228.31s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/aws 910.044s
```
* Handle missing EFS mount target in aws_efs_mount_target.
This commit resolves issue where the EFS mount target would be already
deleted (e.g. it was deleted outside of Terraform, etc.). Also, correct
how values are begin set in the ReadFunc to avoid nil pointer dereference.
Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
* Add EFS mount target DNS helper function.
Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
* Add EFS mount target response helper.
This commit adds a helper which can be used to check whether the response
contains a valid and non-empty list of EFS file system mount targets.
Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>
* Add acceptance test to check for non-empty plan.
This commit adds a test to verify the condition where the underlying EFS mount
target would be deleted and/or disappear resulting in a new resource to be
created to replace it.
Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>