Strip trailing comments from /etc/default/passwd (#43931)

* strip additional comments from /etc/default/passwd

Strip trailling comments from /etc/default/passwd like
MINWEEKS=1 #MINWEEKS=2
MAXWEEKS=12  # MAXWEEKS=8
Which otherwise cause failures with "failed to read /etc/default/passwd: too many values to unpack"

* fix carriage return typo in commit

* yet another typo in commit

* Fix indent problem

* add changelog fragment for PR 43931

changelogs/fragments/43931-strip-trailing-comments.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - user - Strip trailing comments in /etc/default/passwd (https://github.com/ansible/ansible/pull/43931)

lib/ansible/modules/system/user.py

@@ -348,6 +348,7 @@ import pwd
 import shutil
 import socket
 import time
+import re
 
 from ansible.module_utils._text import to_native
 from ansible.module_utils.basic import load_platform_subclass, AnsibleModule
@@ -1525,6 +1526,9 @@ class SunOS(User):
                 line = line.strip()
                 if (line.startswith('#') or line == ''):
                     continue
+                m = re.match(r'^([^#]*)#(.*)$', line)
+                if m:  # The line contains a hash / comment
+                    line = m.group(1)
                 key, value = line.split('=')
                 if key == "MINWEEKS":
                     minweeks = value.rstrip('\n')