test: add crypto check to test-http2-debug

This commit adds a crypto check to test-http2-debug.js as it currently
will error if configured --without-ssl.

The issue here is that the while the test spawns a child process that
runs test-http2-ping.js, which does have a crypto check, it will just
print '1..0 # Skipped: missing crypto' to stdout, and nothing to stderr
which is what this test is trying to assert and hence failing.

PR-URL: https://github.com/nodejs/node/pull/21205


Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@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>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>