command/import: default provider config in same module

Previously we were defaulting the provider configuration selection to a
provider in the root module inferred from the resource type name.

This is close, but not quite right: we need to _start_ with a provider
configuration in the same module as we're importing into, and then our
provider resolution steps during import graph construction will use that
as a starting point for a walk up the tree to find the nearest matching
configuration (which might eventually still be in the root, but not
necessarily).

command/import.go

@@ -174,7 +174,10 @@ func (c *ImportCommand) Run(args []string) int {
 		providerAddr = relAddr.Absolute(addrs.RootModuleInstance)
 	} else {
 		// Use a default address inferred from the resource type.
-		providerAddr = resourceRelAddr.DefaultProviderConfig().Absolute(addrs.RootModuleInstance)
+		// We assume the same module as the resource address here, which
+		// may get resolved to an inherited provider when we construct the
+		// import graph inside ctx.Import, called below.
+		providerAddr = resourceRelAddr.DefaultProviderConfig().Absolute(addr.Module)
 	}
 
 	// Check for user-supplied plugin path