test: adds linux-only test for abstract sockets

Introduce a new linux-only test for binding to an abstract unix socket
and then making an http request against that socket.

Refs: nodejs#49656

test/parallel/test-pipe-abstract-socket-http.js

@@ -0,0 +1,27 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const http = require('http');
+
+if (!common.isLinux) common.skip();
+
+const server = http.createServer(
+  common.mustCall((req, res) => {
+    res.end('ok');
+  })
+);
+
+server.listen(
+  '\0abstract',
+  common.mustCall(() => {
+    http.get(
+      {
+        socketPath: server.address(),
+      },
+      common.mustCall((res) => {
+        assert.strictEqual(res.statusCode, 200);
+        server.close();
+      })
+    );
+  })
+);