feat(terraform_wrapper_module_for_each): Strip provider_meta blocks from versions.tf (#967)

The hook copies the source module's `versions.tf` into the generated wrapper
verbatim. When the source carries a `provider_meta` block (used by
terraform-aws-modules to tag the provider user-agent), the wrapper ends up
declaring it too, so every provider call from a wrappered module sends the
same user-agent fragment twice.

Filter `provider_meta` blocks out while copying. `required_version` and
`required_providers` are preserved.

---------

Signed-off-by: pen-pal <unameme@proton.me>

Author: pen-pal

hooks/terraform_wrapper_module_for_each.sh

@@ -394,9 +394,14 @@ EOF
 
       echo "$CONTENT_VARIABLES_TF" > "${output_dir}/variables.tf"
 
-      # If the root module has a versions.tf, use that; otherwise, create it
+      # If the root module has a versions.tf, use that; otherwise, create it.
       if [[ -f "${full_module_dir}/versions.tf" ]]; then
         cp "${full_module_dir}/versions.tf" "${output_dir}/versions.tf"
+        # Don't propagate redundant `provider_meta` attributes
+        # AWS-provider specific
+        hcledit attribute rm "terraform.provider_meta.${module_repo_provider}.user_agent" -f "${output_dir}/versions.tf" -u
+        # GCP-provider specific
+        hcledit attribute rm "terraform.provider_meta.${module_repo_provider}.module_name" -f "${output_dir}/versions.tf" -u
       else
         echo "$CONTENT_VERSIONS_TF" > "${output_dir}/versions.tf"
       fi