Native image: add support for unix domain sockets (#13242)

Motivation:

unix domain sockets with graalvm native image require additional reflection configuration

Modification:

add unix domain sockets graalvm configuration in reflect-config.json

Result:

unix domain sockets with graalvm native image work out of the box

transport-classes-epoll/src/main/resources/META-INF/native-image/io.netty/netty-transport-classes-epoll/reflect-config.json

@@ -6,6 +6,20 @@
     "name":"io.netty.channel.epoll.EpollServerSocketChannel",
     "allDeclaredConstructors": true
   },
+  {
+    "condition": {
+      "typeReachable": "io.netty.channel.epoll.Native"
+    },
+    "name":"io.netty.channel.epoll.EpollDomainSocketChannel",
+    "allDeclaredConstructors": true
+  },
+  {
+    "condition": {
+      "typeReachable": "io.netty.channel.epoll.Native"
+    },
+    "name":"io.netty.channel.epoll.EpollServerDomainSocketChannel",
+    "allDeclaredConstructors": true
+  },
   {
     "condition": {
       "typeReachable": "io.netty.channel.epoll.Native"