terraform-provider-libvirt: Possible regression: Connection to libvirt via SSH fails with provider version 0.6.14

• This is maybe related to #864
• This looks like a regression introduced in 0.6.14

System Information

Linux distribution

Terraform is running on MacOS 12.3 Libvirt is running on Red Hat Enterprise Linux Server release 7.9 (Maipo)

Terraform version

$ terraform -v
Terraform v1.1.7
on darwin_amd64
+ provider registry.terraform.io/dmacvicar/libvirt v0.6.14
+ provider registry.terraform.io/hashicorp/template v2.2.0

---

Description of Issue/Question

Setup

This is the .tf i use:

terraform {
  required_version = ">= 0.13"
  required_providers {
    libvirt = {
      source  = "dmacvicar/libvirt"
      version = "=0.6.13"
    }
  }
}

provider "libvirt" {
  uri = "qemu+ssh://ansible@zzzzzz/system?keyfile=/Users/xxxxxx/.ssh/id_rsa"
}

module "vm" {
  source  = "MonolithProjects/vm/libvirt"
  version = "1.9.0"

  vm_hostname_prefix = "server"
  vm_count           = 3
  memory             = "2048"
  vcpu               = 1
  pool               = "terra_pool"
  system_volume      = 20
  dhcp               = true
  local_admin        = "local-admin"
  ssh_admin          = "ci-user"
  ssh_private_key    = "~/.ssh/id_rsa"
  local_admin_passwd = "$6$rounds=4096$xxxxxxxxHASHEDxxxPASSWORD"
  ssh_keys = [
    "ssh-rsa AAAAB3NzaC1yxxxxxxxxJ68xkHrWxiQ== xxxxx@yyyyy",
  ]
  time_zone  = "CEST"
  os_img_url = "http://mirror.chpc.utah.edu/pub/almalinux/8/cloud/x86_64/images/AlmaLinux-8-GenericCloud-latest.x86_64.qcow2"
}

output "ip_addresses" {
  value = module.vm
}

Steps to Reproduce Issue

If I specify version = "=0.6.13" in above Terraform file, it works:

$ terraform init -upgrade; terraform plan -out=out.plan
Upgrading modules...
Downloading registry.terraform.io/MonolithProjects/vm/libvirt 1.9.0 for vm...
- vm in .terraform/modules/vm

Initializing the backend...

Initializing provider plugins...
- Finding dmacvicar/libvirt versions matching ">= 0.6.9, 0.6.13"...
- Finding latest version of hashicorp/template...
- Installing dmacvicar/libvirt v0.6.13...
- Installed dmacvicar/libvirt v0.6.13 (self-signed, key ID 96B1FE1A8D4E1EAB)
- Using previously-installed hashicorp/template v2.2.0

(...)

Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # module.vm.libvirt_cloudinit_disk.commoninit[0] will be created
  + resource "libvirt_cloudinit_disk" "commoninit" {
      + id             = (known after apply)
      + name           = "server_init01.iso"
(...)

If I change it to version = "=0.6.14" it fails:

$ terraform init -upgrade; terraform plan -out=out.plan
Upgrading modules...
Downloading registry.terraform.io/MonolithProjects/vm/libvirt 1.9.0 for vm...
- vm in .terraform/modules/vm

Initializing the backend...

Initializing provider plugins...
- Finding dmacvicar/libvirt versions matching ">= 0.6.9, 0.6.14"...
- Finding latest version of hashicorp/template...
- Installing dmacvicar/libvirt v0.6.14...
- Installed dmacvicar/libvirt v0.6.14 (self-signed, key ID 96B1FE1A8D4E1EAB)
- Using previously-installed hashicorp/template v2.2.0

(...)
╷
│ Error: failed to dial libvirt: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
│ 
│   with provider["registry.terraform.io/dmacvicar/libvirt"],
│   on test.tf line 11, in provider "libvirt":
│   11: provider "libvirt" {
│ 
╵