test: move require('https') to after crypto check

Currently, test-https-client-override-global-agent.js fails with the
following error when configured --without-ssl:

Error [ERR_NO_CRYPTO]:
Node.js is not compiled with OpenSSL crypto support
  at Object.assertCrypto (internal/util.js:101:11)
  ...
  at Object.<anonymous>
  (/node/test/parallel/test-https-client-override-global-agent.js:5:15)

This commit moves the require statement to after the crypto check.

PR-URL: nodejs#25388
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-https-client-override-global-agent.js

@@ -1,12 +1,11 @@
 'use strict';
 const common = require('../common');
+if (!common.hasCrypto)
+  common.skip('missing crypto');
 const fixtures = require('../common/fixtures');
 const assert = require('assert');
 const https = require('https');
 
-if (!common.hasCrypto)
-  common.skip('missing crypto');
-
 // Disable strict server certificate validation by the client
 process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0';