terraform: Warning: Incomplete lock file information for providers

[berendt]

Using the plugin cache directory may result in a warning. Doesn't look nice.

│ Warning: Incomplete lock file information for providers
│
│ Due to your customized provider installation methods, Terraform was forced to calculate lock file
│ checksums locally for the following providers:
│   - hashicorp/local
│   - hashicorp/null
│   - terraform-provider-openstack/openstack
│
│ The current .terraform.lock.hcl file only includes checksums for linux_amd64, so Terraform running
│ on another platform will fail to install these providers.
│
│ To calculate additional checksums for another platform, run:
│   terraform providers lock -platform=linux_amd64
│ (where linux_amd64 is the platform to generate)