1.0.1 gives unrecognized file format suffix ".tfvars". error

[AAverin]

Running my packs that are working fine on 0.0.1-techpreview3, updating to 1.0.1 gives a new error
Error: Cannot read from ../vars/do/prometheus.tfvars: unrecognized file format suffix ".tfvars".

Not sure what else to provide to reproduce, file is a regular tfvars file with variables for the pack configured

[angrycub]

Starting with version 0.1.0, Nomad-pack now supports HCL and JSON variable files. To do this without creating parser ambiguity, we added a check for the file extension. Now, variable files should either end in .hcl or .json so that the correct parser is called insuring that any parse errors will be correctly specified for the target syntax.

I'll definitely enhance this error though. I can see that it doesn't provide any information about how to remediate, which I'm sure would be helpful in the moment