CI Failure (key symptom) in SimpleSelfTest.test_cloud

[vbotbuildovich]

https://buildkite.com/redpanda/vtools/builds/13530

Module: rptest.tests.services_self_test
Class: SimpleSelfTest
Method: test_cloud

test_id:    SimpleSelfTest.test_cloud
status:     FAIL
run time:   0.123 seconds

RuntimeError("Invalid CIDR for private network: 'private'")
Traceback (most recent call last):
  File "/home/ubuntu/redpanda/tests/rptest/services/redpanda_cloud.py", line 290, in validate_cidr
    ip_address = ipaddress.ip_network(network_cidr)
  File "/usr/lib/python3.10/ipaddress.py", line 83, in ip_network
    raise ValueError(f'{address!r} does not appear to be an IPv4 or IPv6 network')
ValueError: 'private' does not appear to be an IPv4 or IPv6 network

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/.ducktape-venv/lib/python3.10/site-packages/ducktape/tests/runner_client.py", line 177, in _do_run
    self.test = self.test_context.cls(self.test_context)
  File "/home/ubuntu/redpanda/tests/rptest/tests/services_self_test.py", line 286, in __init__
    self.redpanda = make_redpanda_mixed_service(test_context,
  File "/home/ubuntu/redpanda/tests/rptest/services/redpanda.py", line 4870, in make_redpanda_mixed_service
    return make_redpanda_cloud_service(context, min_brokers=min_brokers)
  File "/home/ubuntu/redpanda/tests/rptest/services/redpanda.py", line 4849, in make_redpanda_cloud_service
    return RedpandaServiceCloud(context,
  File "/home/ubuntu/redpanda/tests/rptest/services/redpanda.py", line 1580, in __init__
    self._cloud_cluster = CloudCluster(
  File "/home/ubuntu/redpanda/tests/rptest/services/redpanda_cloud.py", line 245, in __init__
    self.config.network = self.validate_cidr(self.config.network)
  File "/home/ubuntu/redpanda/tests/rptest/services/redpanda_cloud.py", line 292, in validate_cidr
    raise RuntimeError(
RuntimeError: Invalid CIDR for private network: 'private'

JIRA Link: CORE-2821

[vbotbuildovich]

Duplicate of private network issue