prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  runbot 9.0 red due to letsencrypt?
  Hi,
  
  It seems the 9.0 branch is red on runbot due to the letsencrypt module?
  
  ```
  Call of self.pool.get('letsencrypt').cron(cr, uid, *()) failed in Job 2
  Traceback (most recent call last):
    File "/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/addons/base/ir/ir_cron.py", line 129, in _callback
      getattr(model, method_name)(cr, uid, *args)
    File "/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/api.py", line 250, in wrapper
      return old_api(self, *args, **kwargs)
    File "/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/api.py", line 354, in old_api
      result = method(recs, *args, **kwargs)
    File "/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/addons/letsencrypt/models/letsencrypt.py", line 151, in cron
      account_key, csr, acme_challenge, log=_logger, CA=DEFAULT_CA)
    File "/srv/openerp/instances/openerp-oca-runbot/sandbox/local/lib/python2.7/site-packages/acme_tiny.py", line 104, in get_crt
      raise ValueError("Error requesting challenges: {0} {1}".format(code, result))
  ValueError: Error requesting challenges: 400 {
    "type": "urn:acme:error:malformed",
    "detail": "Error creating new authz :: Invalid character in DNS name",
    "status": 400
  }
  ```
  
  @hbrunn 
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `letsencrypt/__openerp__.py`
  Content:
  ```
  1 # -*- coding: utf-8 -*-
  2 # © 2016 Therp BV <http://therp.nl>
  3 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
  4 {
  5     "name": "Let's encrypt",
  6     "version": "9.0.1.0.0",
  7     "author": "Therp BV,"
  8               "Tecnativa,"
  9               "Odoo Community Association (OCA)",
  10     "license": "AGPL-3",
  11     "category": "Hidden/Dependency",
  12     "summary": "Request SSL certificates from letsencrypt.org",
  13     "depends": [
  14         'base',
  15     ],
  16     "data": [
  17         "data/ir_config_parameter.xml",
  18         "data/ir_cron.xml",
  19     ],
  20     "post_init_hook": 'post_init_hook',
  21     "installable": True,
  22     "external_dependencies": {
  23         'bin': [
  24             'openssl',
  25         ],
  26         'python': [
  27             'acme_tiny',
  28             'IPy',
  29         ],
  30     },
  31 }
  32
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/letsencrypt/__openerp__.py b/letsencrypt/__openerp__.py
  --- a/letsencrypt/__openerp__.py
  +++ b/letsencrypt/__openerp__.py
  @@ -16,6 +16,7 @@
       "data": [
           "data/ir_config_parameter.xml",
           "data/ir_cron.xml",
  +        "demo/ir_cron.xml",
       ],
       "post_init_hook": 'post_init_hook',
       "installable": True,
  
verification_info: {"golden_diff": "diff --git a/letsencrypt/__openerp__.py b/letsencrypt/__openerp__.py\n--- a/letsencrypt/__openerp__.py\n+++ b/letsencrypt/__openerp__.py\n@@ -16,6 +16,7 @@\n     \"data\": [\n         \"data/ir_config_parameter.xml\",\n         \"data/ir_cron.xml\",\n+        \"demo/ir_cron.xml\",\n     ],\n     \"post_init_hook\": 'post_init_hook',\n     \"installable\": True,\n", "issue": "runbot 9.0 red due to letsencrypt?\nHi,\n\nIt seems the 9.0 branch is red on runbot due to the letsencrypt module?\n\n```\nCall of self.pool.get('letsencrypt').cron(cr, uid, *()) failed in Job 2\nTraceback (most recent call last):\n  File \"/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/addons/base/ir/ir_cron.py\", line 129, in _callback\n    getattr(model, method_name)(cr, uid, *args)\n  File \"/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/api.py\", line 250, in wrapper\n    return old_api(self, *args, **kwargs)\n  File \"/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/api.py\", line 354, in old_api\n    result = method(recs, *args, **kwargs)\n  File \"/srv/openerp/instances/openerp-oca-runbot/parts/odoo-extra/runbot/static/build/3148182-9-0-209efa/openerp/addons/letsencrypt/models/letsencrypt.py\", line 151, in cron\n    account_key, csr, acme_challenge, log=_logger, CA=DEFAULT_CA)\n  File \"/srv/openerp/instances/openerp-oca-runbot/sandbox/local/lib/python2.7/site-packages/acme_tiny.py\", line 104, in get_crt\n    raise ValueError(\"Error requesting challenges: {0} {1}\".format(code, result))\nValueError: Error requesting challenges: 400 {\n  \"type\": \"urn:acme:error:malformed\",\n  \"detail\": \"Error creating new authz :: Invalid character in DNS name\",\n  \"status\": 400\n}\n```\n\n@hbrunn \n\n", "before_files": [{"content": "# -*- coding: utf-8 -*-\n# \u00a9 2016 Therp BV <http://therp.nl>\n# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).\n{\n    \"name\": \"Let's encrypt\",\n    \"version\": \"9.0.1.0.0\",\n    \"author\": \"Therp BV,\"\n              \"Tecnativa,\"\n              \"Odoo Community Association (OCA)\",\n    \"license\": \"AGPL-3\",\n    \"category\": \"Hidden/Dependency\",\n    \"summary\": \"Request SSL certificates from letsencrypt.org\",\n    \"depends\": [\n        'base',\n    ],\n    \"data\": [\n        \"data/ir_config_parameter.xml\",\n        \"data/ir_cron.xml\",\n    ],\n    \"post_init_hook\": 'post_init_hook',\n    \"installable\": True,\n    \"external_dependencies\": {\n        'bin': [\n            'openssl',\n        ],\n        'python': [\n            'acme_tiny',\n            'IPy',\n        ],\n    },\n}\n", "path": "letsencrypt/__openerp__.py"}], "after_files": [{"content": "# -*- coding: utf-8 -*-\n# \u00a9 2016 Therp BV <http://therp.nl>\n# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).\n{\n    \"name\": \"Let's encrypt\",\n    \"version\": \"9.0.1.0.0\",\n    \"author\": \"Therp BV,\"\n              \"Tecnativa,\"\n              \"Odoo Community Association (OCA)\",\n    \"license\": \"AGPL-3\",\n    \"category\": \"Hidden/Dependency\",\n    \"summary\": \"Request SSL certificates from letsencrypt.org\",\n    \"depends\": [\n        'base',\n    ],\n    \"data\": [\n        \"data/ir_config_parameter.xml\",\n        \"data/ir_cron.xml\",\n        \"demo/ir_cron.xml\",\n    ],\n    \"post_init_hook\": 'post_init_hook',\n    \"installable\": True,\n    \"external_dependencies\": {\n        'bin': [\n            'openssl',\n        ],\n        'python': [\n            'acme_tiny',\n            'IPy',\n        ],\n    },\n}\n", "path": "letsencrypt/__openerp__.py"}]}