http2: replace fixturesDir with common.fixtures

PR-URL: #15839
Reviewed-By: Ryan Graham <[email protected]>
Reviewed-By: Gibson Fahnestock <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Gireesh Punathil <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>

Author: ekulnivek

test/parallel/test-http2-respond-file-304.js

@@ -4,16 +4,16 @@
 const common = require('../common');
 if (!common.hasCrypto)
   common.skip('missing crypto');
+const fixtures = require('../common/fixtures');
 const http2 = require('http2');
 const assert = require('assert');
-const path = require('path');
 
 const {
   HTTP2_HEADER_CONTENT_TYPE,
   HTTP2_HEADER_STATUS
 } = http2.constants;
 
-const fname = path.resolve(common.fixturesDir, 'elipses.txt');
+const fname = fixtures.path('elipses.txt');
 
 const server = http2.createServer();
 server.on('stream', (stream) => {