[BUG] terraform roster doesn't work anymore with new terraform state file format

[viq]

Description
https://github.com/saltstack/salt/blob/master/salt/roster/terraform.py#L126 opens directly terraform state file for reading. The format of the file changed, and a list modules doesn't exist anymore, producing only

$ salt-ssh '*' test.ping
[ERROR   ] Malformed tfstate file. No modules found
[ERROR   ] No matching targets found in roster.

Setup
Very basic setup with pipenv per https://docs.saltproject.io/en/latest/ref/roster/all/salt.roster.terraform.html:

$ cat Saltfile
salt-ssh:
  config_dir: etc/salt
  max_procs: 30
  wipe_ssh: True

$ cat Pipfile
[[source]]
name = "pypi"
url = "https://pypi.org/simple"
verify_ssl = true

[dev-packages]

[packages]
salt-ssh = "*"
present = "*"

[requires]
python_version = "3.9"

[pipenv]
allow_prereleases = true

$ cat etc/salt/master
root_dir: .
file_roots:
  base:
    - srv/salt
pillar_roots:
  base:
    - srv/pillar
roster: terraform

Machine created on OpenStack via terraform, with

resource "openstack_compute_instance_v2" "salt" {
(...)
}

resource "salt_host" "salt" {
  salt_id = "salt"
  host = "${openstack_compute_instance_v2.salt.access_ip_v4}"
  user = "debian"
  passwd = "hopefully_this_isnt_used"
  sudo = true
}

$ terraform version
Terraform v1.0.7
on linux_amd64
+ provider registry.terraform.io/dmacvicar/salt v0.0.2
+ provider registry.terraform.io/terraform-provider-openstack/openstack v1.43.0

Steps to Reproduce the behavior
Follow https://docs.saltproject.io/en/latest/ref/roster/all/salt.roster.terraform.html using recent terraform version, try to use salt-ssh with it.

Expected behavior
Roster working.

Versions Report

salt --versions-report

(Provided by running salt --versions-report. Please also mention any differences in master/minion versions.)

$ salt-ssh --versions-report
Salt Version:
          Salt: 3003.3
 
Dependency Versions:
          cffi: Not Installed
      cherrypy: Not Installed
      dateutil: Not Installed
     docker-py: Not Installed
         gitdb: Not Installed
     gitpython: Not Installed
        Jinja2: 3.0.1
       libgit2: Not Installed
      M2Crypto: Not Installed
          Mako: Not Installed
       msgpack: 1.0.2
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     pycparser: Not Installed
      pycrypto: Not Installed
  pycryptodome: 3.10.1
        pygit2: Not Installed
        Python: 3.9.7 (default, Aug 30 2021, 00:00:00)
  python-gnupg: Not Installed
        PyYAML: 5.4.1
         PyZMQ: 22.3.0
         smmap: Not Installed
       timelib: Not Installed
       Tornado: 4.5.3
           ZMQ: 4.3.4
 
System Versions:
          dist: fedora 33 
        locale: utf-8
       machine: x86_64
       release: 5.13.13-1.fc25.qubes.x86_64
        system: Linux
       version: Fedora 33 

[MKLeb]

Closing because #61311 should fix it