udm_user: fix broken import

Tested with:
from datetime import datetime, timedelta
from dateutil.relativedelta import relativedelta
n = datetime.now()
assert n + timedelta(days=365) == n + relativedelta(years=1)

lib/ansible/modules/cloud/univention/udm_user.py

@@ -334,8 +334,7 @@ EXAMPLES = '''
 RETURN = '''# '''
 
 import crypt
-from datetime import date
-from dateutil.relativedelta import relativedelta
+from datetime import date, timedelta
 
 from ansible.module_utils.basic import AnsibleModule
 from ansible.module_utils.univention_umc import (
@@ -347,7 +346,7 @@ from ansible.module_utils.univention_umc import (
 
 
 def main():
-    expiry = date.strftime(date.today() + relativedelta(years=1), "%Y-%m-%d")
+    expiry = date.strftime(date.today() + timedelta(days=365), "%Y-%m-%d")
     module = AnsibleModule(
         argument_spec = dict(
             birthday                = dict(default=None,

test/sanity/import/skip.txt

@@ -44,7 +44,6 @@ lib/ansible/modules/cloud/google/gc_storage.py
 lib/ansible/modules/cloud/google/gcdns_record.py
 lib/ansible/modules/cloud/google/gcdns_zone.py
 lib/ansible/modules/cloud/ovirt/ovirt_disks.py
-lib/ansible/modules/cloud/univention/udm_user.py
 lib/ansible/modules/cloud/webfaction/webfaction_app.py
 lib/ansible/modules/cloud/webfaction/webfaction_db.py
 lib/ansible/modules/cloud/webfaction/webfaction_domain.py