[BUG] salt-ssh ModuleNotFoundError: No module named 'jinja2.asyncsupport'

Description

salt-ssh 'srv1' state.apply check_pl --python3-bin=/usr/bin/python

returns:

Traceback (most recent call last):
  File "/var/tmp/.root_040010_salt/salt-call", line 27, in <module>
    salt_call()
  File "/var/tmp/.root_040010_salt/pyall/salt/scripts.py", line 437, in salt_call
    import salt.cli.call
  File "/var/tmp/.root_040010_salt/pyall/salt/cli/call.py", line 6, in <module>
    import salt.cli.caller
  File "/var/tmp/.root_040010_salt/pyall/salt/cli/caller.py", line 15, in <module>
    import salt.minion
  File "/var/tmp/.root_040010_salt/pyall/salt/minion.py", line 25, in <module>
    import salt.client
  File "/var/tmp/.root_040010_salt/pyall/salt/client/__init__.py", line 47, in <module>
    import salt.utils.minions
  File "/var/tmp/.root_040010_salt/pyall/salt/utils/minions.py", line 12, in <module>
    import salt.auth.ldap
  File "/var/tmp/.root_040010_salt/pyall/salt/auth/ldap.py", line 18, in <module>
    from jinja2 import Environment
  File "/var/tmp/.root_040010_salt/pyall/jinja2/__init__.py", line 81, in <module>
    _patch_async()
  File "/var/tmp/.root_040010_salt/pyall/jinja2/__init__.py", line 77, in _patch_async
    from jinja2.asyncsupport import patch_all
ModuleNotFoundError: No module named 'jinja2.asyncsupport'

Setup
salt-ssh from saltmaster (3002.5 @ debian9)
remote: ubuntu 18.04LTS

Steps to Reproduce the behavior

run state.apply or cmd.run via salt-ssh

Expected behavior

cmd.run /state.apply succeeed

Screenshots
If applicable, add screenshots to help explain your problem.

Versions Report

Salt Version:
          Salt: 3002.5
 
Dependency Versions:
          cffi: 1.13.2
      cherrypy: 3.5.0
      dateutil: 2.5.3
     docker-py: 1.9.0
         gitdb: 2.0.0
     gitpython: 2.1.1
        Jinja2: 2.9.4
       libgit2: 0.28.4
      M2Crypto: Not Installed
          Mako: Not Installed
       msgpack: 0.6.2
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     pycparser: 2.19
      pycrypto: 2.6.1
  pycryptodome: 3.6.1
        pygit2: 1.0.2
        Python: 3.5.3 (default, Nov 18 2020, 21:09:16)
  python-gnupg: Not Installed
        PyYAML: 3.12
         PyZMQ: 17.1.2
         smmap: 2.0.1
       timelib: Not Installed
       Tornado: 4.5.3
           ZMQ: 4.2.1
 
System Versions:
          dist: debian 9 stretch
        locale: UTF-8
       machine: x86_64
       release: 4.9.0-14-amd64
        system: Linux
       version: Debian GNU/Linux 9 stretch

Additional context

It seems that salt-ssh does not send all modules files from jinja2 library. Because there is a jinja2 lib in /var/tmp/.root_040010_salt/pyall but without asyncsupport.py it throws this error error. Even if I have python3-jinja2 installed on remote server, it does not search jinja2 lib in another python path e.g /usr/lib/python3/dist-packages/

/usr/lib/python3/dist-packages/jinja2/asyncsupport.py

PoC:

root@srv1:/var/tmp/.root_040010_salt# python3
Python 3.6.9 (default, Jan 26 2021, 15:33:00) 
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']
>>> from jinja2.asyncsupport import patch_all
>>> 

With /var/tmp/.root_040010_salt/pyall to sys.path:

root@srv1:/var/tmp/.root_040010_salt# python3
Python 3.6.9 (default, Jan 26 2021, 15:33:00) 
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path.insert(0, '/var/tmp/.root_040010_salt/pyall')
>>> sys.path
['/var/tmp/.root_040010_salt/pyall', '', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']
>>> 
>>> from jinja2.asyncsupport import patch_all
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/var/tmp/.root_040010_salt/pyall/jinja2/__init__.py", line 81, in <module>
    _patch_async()
  File "/var/tmp/.root_040010_salt/pyall/jinja2/__init__.py", line 77, in _patch_async
    from jinja2.asyncsupport import patch_all
ModuleNotFoundError: No module named 'jinja2.asyncsupport'

Start with the salt-ssh execution path that builds /var/tmp/.root_040010_salt/pyall and inspect the bundled jinja2/init.py, which imports jinja2.asyncsupport. Compare the bundled files with the remote Python installation shown in the report, then verify that salt-ssh state.apply and cmd.run complete successfully without the ModuleNotFoundError.