test: add crypto check to test-http2-debug

[danbev]

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.

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

CI: https://ci.nodejs.org/job/node-test-pull-request/15332/

node-test-commit-smartos failure looks unrelated

console output:

01:31:26 WARNING: C++ compiler too old, need g++ 4.9.4 or clang++ 3.4.2 (CXX=g++)
01:31:26 ERROR: Did not find a new enough assembler, install one or build with
01:31:26        --openssl-no-asm.
01:31:26        Please refer to BUILDING.md
01:31:26 make: *** [Makefile:463: build-ci] Error 1
01:31:26 Build step 'Execute shell' marked build as failure
01:31:26 Checking ^not ok
01:31:27 Jenkins Text Finder: File set '*.tap' is empty
01:31:27 Performing Post build task...
01:31:27 Match found for : : True
01:31:27 Logical operation result is TRUE
01:31:27 Running script  : #/bin/bash
01:31:27 
01:31:27 set -x
01:31:27 mkdir out/junit
01:31:27 tap2junit -i test.tap -o out/junit/test.xml
01:31:27 tap2junit -i cctest.tap -o out/junit/cctest.xml
01:31:27 [smartos16-64] $ /bin/sh -xe /var/tmp/jenkins7423661485300701653.sh
01:31:27 + set -x
01:31:27 + mkdir out/junit
01:31:27 mkdir: cannot create directory 'out/junit': No such file or directory
01:31:27 POST BUILD TASK : FAILURE
01:31:27 END OF POST BUILD TASK : 0
01:31:27 Recording test results
01:31:27 ERROR: Step ?Publish JUnit test result report? failed: No test report files were found. Configuration error?
01:31:27 Notifying upstream projects of job completion
01:31:27 Finished: FAILURE

Landed in f86a181.