src: add missing "http_parser.h" include

In 9d522225e7 the indirect "http_parser.h"
include was removed, which made `NODE_STRINGIFY()` fail silently for the
http parser version in `process.versions`.

PR-URL: https://github.com/nodejs/node/pull/12464
Fixes: https://github.com/nodejs/node/issues/12463
Ref: https://github.com/nodejs/node/pull/12366
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>

src/node.cc

@@ -54,6 +54,7 @@
 #include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
+#include "http_parser.h"
 #include "req-wrap.h"
 #include "req-wrap-inl.h"
 #include "string_bytes.h"

test/parallel/test-process-versions.js

@@ -20,3 +20,11 @@ expected_keys.sort();
 const actual_keys = Object.keys(process.versions).sort();
 
 assert.deepStrictEqual(actual_keys, expected_keys);
+
+assert(/^\d+\.\d+\.\d+(-.*)?$/.test(process.versions.ares));
+assert(/^\d+\.\d+\.\d+(-.*)?$/.test(process.versions.http_parser));
+assert(/^\d+\.\d+\.\d+(-.*)?$/.test(process.versions.node));
+assert(/^\d+\.\d+\.\d+(-.*)?$/.test(process.versions.uv));
+assert(/^\d+\.\d+\.\d+(-.*)?$/.test(process.versions.zlib));
+assert(/^\d+\.\d+\.\d+\.\d+$/.test(process.versions.v8));
+assert(/^\d+$/.test(process.versions.modules));