feat: Support IPV6 only K8s clusters

Author: teoincontatto

stackgres-k8s/src/operator/src/main/resources/envoy/envoy-lds.yaml

@@ -3,7 +3,8 @@ resources:
     name: patroni_listener
     address:
       socket_address:
-        address: 0.0.0.0
+        ipv4_compat: true
+        address: "::"
         port_value: '$patroni_entry_port'
     filter_chains:
     - filters:
@@ -32,7 +33,8 @@ resources:
     per_connection_buffer_limit_bytes: 1048576 # 1 MiB
     address:
       socket_address:
-        address: 0.0.0.0
+        ipv4_compat: true
+        address: "::"
         port_value: '$postgres_entry_port'
     filter_chains:
     - filters:
@@ -64,7 +66,8 @@ resources:
     per_connection_buffer_limit_bytes: 1048576 # 1 MiB
     address:
       socket_address:
-        address: 0.0.0.0
+        ipv4_compat: true
+        address: "::"
         port_value: '$postgres_repl_entry_port'
     filter_chains:
     - filters:
@@ -79,7 +82,8 @@ resources:
     per_connection_buffer_limit_bytes: 1048576 # 1 MiB
     address:
       socket_address:
-        address: 0.0.0.0
+        ipv4_compat: true
+        address: "::"
         port_value: '$babelfish_entry_port'
     filter_chains:
     - filters:

stackgres-k8s/src/operator/src/main/resources/envoy/envoy.yaml

@@ -20,5 +20,6 @@ admin:
   access_log: []
   address:
     socket_address:
-      address: 0.0.0.0
+      ipv4_compat: true
+      address: "::"
       port_value: $envoy_port