Ansible Tower is unable to fetch license from the Red Hat Customer Portal

Issue

• Ansible Tower is unable to fetch license from the Red Hat Customer Portal and throws the error below:

2020-03-12 17:50:53,376 ERROR    awx.api.views.root Invalid license submitted.
Traceback (most recent call last):
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/urllib3/connection.py", line 159, in _new_conn
    (self._dns_host, self.port), self.timeout, **extra_kw)
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/urllib3/util/connection.py", line 57, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
  File "/usr/lib64/python3.6/socket.py", line 745, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/urllib3/connectionpool.py", line 343, in _make_request
    self._validate_conn(conn)
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/urllib3/connectionpool.py", line 839, in _validate_conn
    conn.connect()
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/urllib3/connection.py", line 301, in connect
    conn = self._new_conn()
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/urllib3/connection.py", line 168, in _new_conn
    self, "Failed to establish a new connection: %s" % e)
urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x7fd193b16160>: Failed to establish a new connection: [Errno -2] Name or service not known