test_1_node_cluster and test_3_node_cluster fail time to time

[dkropachev]

Run: https://github.com/scylladb/python-driver/actions/runs/12611445109/job/35147114188?pr=399
Logs: flog.zip

Output:

=========================== short test summary info ============================
FAILED tests/integration/standard/test_scylla_cloud.py::ScyllaCloudConfigTests::test_1_node_cluster - IndexError: list index out of range
FAILED tests/integration/standard/test_scylla_cloud.py::ScyllaCloudConfigTests::test_3_node_cluster - IndexError: list index out of range

=================================== FAILURES ===================================
__________________ ScyllaCloudConfigTests.test_1_node_cluster __________________

self = <tests.integration.standard.test_scylla_cloud.ScyllaCloudConfigTests testMethod=test_1_node_cluster>

    def test_1_node_cluster(self):
        self.ccm_cluster = use_cluster("sni_proxy", [1], start=False)
>       config_data_yaml, config_path_yaml = self.start_cluster_with_proxy()

tests/integration/standard/test_scylla_cloud.py:62: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
tests/integration/standard/test_scylla_cloud.py:50: in start_cluster_with_proxy
    start_sni_proxy(ccm_cluster.get_path(), nodes_info=nodes_info, listen_port=sni_port)
.test-venv/lib/python3.12/site-packages/ccmlib/utils/sni_proxy.py:137: in start_sni_proxy
    sniproxy_conf_path = configure_sni_proxy(conf_dir, nodes_info, listen_port=listen_port)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

conf_dir = '/home/runner/work/python-driver/python-driver/tests/integration/ccm/sni_proxy'
nodes_info = [], listen_port = 443

    def configure_sni_proxy(conf_dir, nodes_info, listen_port=443):
        sniproxy_conf_tmpl = dedent("""
            user sniproxy
            pidfile /var/run/sniproxy/sniproxy.pid
    
            listener $FIRST_ADDRESS $listen_port {
              proto tls
            }
    
            table {
            $TABLES
            }
            """)
        tables = ""
        mapping = {}
>       tables += f"  ^cql.cluster-id.scylla.com$ {nodes_info[0].address}:{nodes_info[0].port}\n"
E       IndexError: list index out of range

.test-venv/lib/python3.12/site-packages/ccmlib/utils/sni_proxy.py:115: IndexError

__________________ ScyllaCloudConfigTests.test_3_node_cluster __________________

self = <tests.integration.standard.test_scylla_cloud.ScyllaCloudConfigTests testMethod=test_3_node_cluster>

    def test_3_node_cluster(self):
        self.ccm_cluster = use_cluster("sni_proxy", [3], start=False)
>       config_data_yaml, config_path_yaml = self.start_cluster_with_proxy()

tests/integration/standard/test_scylla_cloud.py:80: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
tests/integration/standard/test_scylla_cloud.py:50: in start_cluster_with_proxy
    start_sni_proxy(ccm_cluster.get_path(), nodes_info=nodes_info, listen_port=sni_port)
.test-venv/lib/python3.12/site-packages/ccmlib/utils/sni_proxy.py:137: in start_sni_proxy
    sniproxy_conf_path = configure_sni_proxy(conf_dir, nodes_info, listen_port=listen_port)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

conf_dir = '/home/runner/work/python-driver/python-driver/tests/integration/ccm/sni_proxy'
nodes_info = [], listen_port = 443

    def configure_sni_proxy(conf_dir, nodes_info, listen_port=443):
        sniproxy_conf_tmpl = dedent("""
            user sniproxy
            pidfile /var/run/sniproxy/sniproxy.pid
    
            listener $FIRST_ADDRESS $listen_port {
              proto tls
            }
    
            table {
            $TABLES
            }
            """)
        tables = ""
        mapping = {}
>       tables += f"  ^cql.cluster-id.scylla.com$ {nodes_info[0].address}:{nodes_info[0].port}\n"
E       IndexError: list index out of range

.test-venv/lib/python3.12/site-packages/ccmlib/utils/sni_proxy.py:115: IndexError
----------------------------- Captured stdout call -----------------------------
generating keystore.jks in [/home/runner/work/python-driver/python-driver/tests/integration/ccm/sni_proxy]
exporting cert from keystore.jks in [/home/runner/work/python-driver/python-driver/tests/integration/ccm/sni_proxy]
importing cert into truststore.jks in [/home/runner/work/python-driver/python-driver/tests/integration/ccm/sni_proxy]
exporting cert to pks12 from keystore.jks in [/home/runner/work/python-driver/python-driver/tests/integration/ccm/sni_proxy]
Using openssl to split pks12 in [/home/runner/work/python-driver/python-driver/tests/integration/ccm/sni_proxy] to pem format
generating keystore.jks in [/tmp/tmpzwvxn3nr]
exporting cert from keystore.jks in [/tmp/tmpzwvxn3nr]
importing cert into truststore.jks in [/tmp/tmpzwvxn3nr]
exporting cert to pks12 from keystore.jks in [/tmp/tmpzwvxn3nr]
Using openssl to split pks12 in [/tmp/tmpzwvxn3nr] to pem format
----------------------------- Captured stderr call -----------------------------