A couple commits got rebased together here, and it's easier to enumerate
them in a single commit.
Skip copying of states during migration if they are the same state. This
can happen when trying to reconfigure a backend's options, or if the
state was manually transferred. This can fail unexpectedly with locking
enabled.
Honor the `-input` flag for all confirmations (the new test hit some
more). Also unify where we reference the Meta.forceInitCopy and transfer
the value to the existing backendMigrateOpts.force field.
During the input walk we stash the values resulting from user input
(if any) in the eval context for use when later walks need to resolve
the provider config.
However, this repository of input results is only able to represent
literal values, since it does not retain the record of which of the keys
have values that are "computed".
Previously we were blindly stashing all of the results, failing to
consider that some of them might be computed. That resulted in the
UnknownValue placeholder being misinterpreted as a literal value when
the data is used later, which ultimately resulted in it clobbering the
actual expression evaluation result and thus causing the provider to
fail to configure itself.
Now we are careful to only retain in this repository the keys whose values
are known statically during the input phase. This eventually gets merged
with the dynamic evaluation results on subsequent walks, with the dynamic
keys left untouched due to their absence from the stored input map.
This fixes#11264.
These are required fields
```
$ terraform plan
2 error(s) occurred:
* aws_autoscaling_group.bar: "max_size": required field is not set
* aws_autoscaling_group.bar: "min_size": required field is not set
```
From the code:
"records": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: schema.HashString,
Removed: "Use `record` instead. This attribute will be removed in a future version",
},
"record": &schema.Schema{
Type: schema.TypeString,
Required: true,
James Bardin