Remove distutils from connection plugin (#456) (#464)

[backport/2.3] Remove distutils from connection plugin (#456)

Remove distutils from connection plugin
SUMMARY
distutils.spawn.find_executable is deprecated and shutils.which is a
suitable replacement.
ISSUE TYPE
Bugfix Pull Request
COMPONENT NAME
ADDITIONAL INFORMATION
Reviewed-by: Gonéri Le Bouder goneri@lebouder.net
Reviewed-by: Joseph Torcasso 
(cherry picked from commit 531a9fe)

changelogs/fragments/456-replace-distutils.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - kubectl.py - replace distutils.spawn.find_executable with shutil.which in the kubectl connection plugin (https://github.com/ansible-collections/kubernetes.core/pull/456).

plugins/connection/kubectl.py

@@ -171,9 +171,9 @@ DOCUMENTATION = r"""
         aliases: [ kubectl_verify_ssl ]
 """
 
-import distutils.spawn
 import os
 import os.path
+import shutil
 import subprocess
 
 from ansible.parsing.yaml.loader import AnsibleLoader
@@ -219,14 +219,9 @@ class Connection(ConnectionBase):
         # Note: kubectl runs commands as the user that started the container.
         # It is impossible to set the remote user for a kubectl connection.
         cmd_arg = "{0}_command".format(self.transport)
-        if cmd_arg in kwargs:
-            self.transport_cmd = kwargs[cmd_arg]
-        else:
-            self.transport_cmd = distutils.spawn.find_executable(self.transport)
-            if not self.transport_cmd:
-                raise AnsibleError(
-                    "{0} command not found in PATH".format(self.transport)
-                )
+        self.transport_cmd = kwargs.get(cmd_arg, shutil.which(self.transport))
+        if not self.transport_cmd:
+            raise AnsibleError("{0} command not found in PATH".format(self.transport))
 
     def _build_exec_cmd(self, cmd):
         """Build the local kubectl exec command to run cmd on remote_host"""