* master:
providers/aws: Convert Launch Configurations to awslabs/aws-sdk-go
update CHANGELOG
terraform: test post state update is called
command: StateHook for continous state updates
terraform: more state tests, fix a bug
state: deep copies are required
terraform: make DeepCopy public
state/remote: increment serial properly
state: only change serial if changed
terraform: call the EvalUpdateStateHook strategically
terraform: PostStateUpdate hook and EvalUpdateStateHook
- Remove check on password for AWS RDS Instance
- Update documentation on AWS RDS Instance regarding DB Security Groups
- Change error handling to check error code from AWS API [ci skip]
The `SourceDestCheck` attribute can only be changed via
`ModifyInstance`, so the AWS instance resource's `Create` function calls
out to `Update` before it returns to take care of applying
`source_dest_check` properly.
The `Update` function originally guarded against unnecessary API calls
with `GetOk`, which worked fine until #993 when we changed the `GetOk`
semantics to no longer distinguish between "configured and zero-value"
and "not configured".
I attempted in #1003 to fix this by switching to `HasChange` for the
guard, but this does not work in the `Create` case.
I played around with a few different ideas, none of which worked:
(a) Setting `Default: true` on `source_dest_check' has no effect
(b) Setting `Computed: true` on `source_dest_check' and adding a `d.Set`
call in the `Read` function (which will initially set the value to `true`
after instance creation). I really thought I could get this to work,
but it results in the following:
```go
d.Get('source_dest_check') // true
d.HasChange('source_dest_check') // false
d.GetChange('source_dest_check') // old: false, new: false
```
I couldn't figure out a way of coherently dealing with that result, so I
ended up throwing up my hands and giving up on the guard altogether.
We'll call `ModifyInstance` more than we have to, but this at least
yields expected behavior for both Creates and Updates.
Fixes#1020
Rahul Menon