Ensure standard locale in run_command (group5-batch1) (#11768)

* ensure standard locale in run_command (group5-batch1)

Adds ``LANGUAGE=C`` and ``LC_ALL=C`` to ``run_command()`` calls in modules
that parse command output, to prevent locale-dependent parsing failures on
non-C-locale systems.

Modules updated: apache2_module, composer, facter_facts, known_hosts module
utils, lvg_rename, macports, modprobe, monit, open_iscsi, pacman_key,
rhsm_release, rpm_ostree_pkg, sysupgrade.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* add changelog fragment for group5-batch1

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Remove lvg_rename from locale fix — superseded by PR #11746

PR #11746 (feat: use CmdRunner for LVM commands) takes priority and
will handle lvg_rename.py via CmdRunner refactor. Removing our
run_command_environ_update change to avoid conflict.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

plugins/module_utils/known_hosts.py

@@ -152,7 +152,7 @@ def add_host_key(module, fqdn, port=22, key_type="rsa", create_dir=False):
     else:
         this_cmd = f"{keyscan_cmd} -t {key_type} {fqdn}"
 
-    rc, out, err = module.run_command(this_cmd)
+    rc, out, err = module.run_command(this_cmd, environ_update={"LANGUAGE": "C", "LC_ALL": "C"})
     # ssh-keyscan gives a 0 exit code and prints nothing on timeout
     if rc != 0 or not out:
         msg = "failed to retrieve hostkey"