test: stronger crypto in test fixtures

Several test fixtures use use weak crypto (e.g. RC4 or MD5).
Rgenerated the test fixtures to be compatible with FIPS mode.

PR-URL: https://github.com/nodejs/node/pull/3759


Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Shigeki Ohtsu <ohtsu@iij.ad.jp>