Failed to connect to debmon.org at port 443: [Errno 101] Network is unreachable


Hi I am new to GitHub.

Iam getting the following error which running the no-ui role:
TASK [icinga2-ansible-no-ui : Get Debmon Apt Key for Debian OS family (Debian)] ****************************************************************************************************************************
The full traceback is:
  File "/tmp/ansible_xR8Vbc/ansible_modlib.zip/ansible/module_utils/urls.py", line 1017, in fetch_url
    client_key=client_key, cookies=cookies)
  File "/tmp/ansible_xR8Vbc/ansible_modlib.zip/ansible/module_utils/urls.py", line 920, in open_url
    r = urllib_request.urlopen(*urlopen_args)
  File "/usr/lib/python2.7/urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python2.7/urllib2.py", line 427, in open
    req = meth(req)
  File "/tmp/ansible_xR8Vbc/ansible_modlib.zip/ansible/module_utils/urls.py", line 738, in http_request
    raise ConnectionError('Failed to connect to %s at port %s: %s' % (self.hostname, self.port, to_native(e)))

fatal: [icinga_one]: FAILED! => {
    "changed": false,
    "invocation": {
        "module_args": {
            "data": null,
            "file": null,
            "id": "DC0EE15A29D662D2",
            "key": null,
            "keyring": null,
            "keyserver": null,
            "state": "present",
            "url": "https://debmon.org/debmon/repo.key",
            "validate_certs": true
        }
    },
    "msg": "Failed to connect to debmon.org at port 443: [Errno 101] Network is unreachable"
}

Issue is with adding key. How can I resolve this?

## Expected Behavior
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## Current Behavior
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## Possible Solution
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## Steps to Reproduce (for bugs)
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1.
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## Context
<!--- How has this issue affected you? What are you trying to accomplish? -->
<!--- Providing context helps us come up with a solution that is most useful in the real world -->
I am trying to install icinga from scratch using your ansible playbook/roles.
## Your Environment
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* Role version:
* Ansible version (`ansible --version`):
* Python version (`python -V`):
* Operating System and version:
Using ansible version 2.5.
Icinga / ansible-playbooks

Failed to connect to debmon.org at port 443: [Errno 101] Network is unreachable #85
