test: http2-respond-file-errors to fixtures module

Replace common.fixturesDir with fixtures in
test-http2-respond-file-errors.js.

PR-URL: #16004
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Yuta Hiroto <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>

Author: davidhlu

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

@@ -4,8 +4,8 @@
 const common = require('../common');
 if (!common.hasCrypto)
   common.skip('missing crypto');
+const fixtures = require('../common/fixtures');
 const http2 = require('http2');
-const path = require('path');
 
 const {
   HTTP2_HEADER_CONTENT_TYPE,
@@ -29,7 +29,7 @@ const types = {
   symbol: Symbol('test')
 };
 
-const fname = path.resolve(common.fixturesDir, 'elipses.txt');
+const fname = fixtures.path('elipses.txt');
 
 const server = http2.createServer();