Installation of the Harvester terraform provider (e2e_be)

Follow the instruction of the README

Expected Results

The provider is initialized and the terraform init command succeeds:

Initializing provider plugins...
- Finding harvester/harvester versions matching "~> 0.1.0"...
- Installing harvester/harvester v0.1.0...
- Installed harvester/harvester v0.1.0 (unauthenticated)
 
...
 
Terraform has been successfully initialized!