fix(cluster): ipv6 address in network_interfaces object

The problem was found during IPv6 test.
IPv6 was converted to full format when parse nodetool status result.
This change was represented by  #7047

But IPv6 address was not converted when collected info about nodes network interfaces (AWS).

During checking nodes status, we compare between 'nodetool status' output and node address
that kept in the network_interfaces object. It fails because the IPv6 address miss leading zeros.
As result the test fails with errors 'Failed to find a node in cluster by IP'

Fixes: #7447

sdcm/cluster.py

@@ -2744,7 +2744,7 @@ def get_peers_info(self):
         for row in cql_results:
             peer = row.peer
             try:
-                ipaddress.ip_address(row.peer)
+                peer = ipaddress.ip_address(row.peer).exploded
             except ValueError as exc:
                 current_err = f"Peer '{peer}' is not an IP address, err: {exc}\n"
                 LOGGER.warning(current_err)
@@ -2776,7 +2776,7 @@ def get_gossip_info(self) -> dict[BaseNode, dict]:
             if line.startswith('SCHEMA:'):
                 schema = line.replace('SCHEMA:', '')
             elif line.startswith('RPC_ADDRESS:'):
-                ip = line.replace('RPC_ADDRESS:', '')
+                ip = ipaddress.ip_address(line.replace('RPC_ADDRESS:', '')).exploded
             elif line.startswith('STATUS:'):
                 status = line.replace('STATUS:', '').split(',')[0]
             elif line.startswith('DC:'):

sdcm/cluster_aws.py

@@ -12,7 +12,7 @@
 # Copyright (c) 2020 ScyllaDB
 
 # pylint: disable=too-many-lines, too-many-public-methods
-
+import ipaddress
 import json
 import logging
 import os
@@ -460,7 +460,8 @@ def network_interfaces(self):
         for interface in self._instance.network_interfaces:
             private_ip_addresses = [private_address["PrivateIpAddress"]
                                     for private_address in interface.private_ip_addresses]
-            ipv6_addresses = [ipv6_address['Ipv6Address'] for ipv6_address in interface.ipv6_addresses]
+            ipv6_addresses = [ipaddress.ip_address(
+                ipv6_address['Ipv6Address']).exploded for ipv6_address in interface.ipv6_addresses]
             device_indexes.append(interface.attachment['DeviceIndex'])
             ipv4_public_address = interface.association_attribute['PublicIp'] if interface.association_attribute else None
             dns_public_name = interface.association_attribute['PublicDnsName'] if interface.association_attribute else None