Fix ssh connection failure when a provider is set
Fix ssh connection failure when a provider is set

Fix a bug with the SSH connection script where the requested provider's
credentials would not be used, leading to a failure to download the key.

hastexo/hastexo-xblock,arbrandes/hastexo-xblock,hastexo/hastexo-xblock,hastexo/hastexo-xblock,arbrandes/hastexo-xblock,arbrandes/hastexo-xblock,arbrandes/hastexo-xblock,arbrandes/hastexo-xblock,hastexo/hastexo-xblock