issue #39008 still reproducible on 14.x branch, PR #39011 needs to be backported

[batrla]

Version

v14.17.5

Platform

SunOS myhost 5.11 11.4.36.101.0 i86pc i386 i86pc non-virtualized

Subsystem

test

What steps will reproduce the bug?

This PR is missing on 14.x branch: #39011 and as result the issue #39008 is still reproducible on 14.x branch on machine without internet connection. See https://github.com/nodejs/node/blob/v14.x/test/parallel/test-https-agent-unref-socket.js, it still refers to http://example.com.

Running (g)make test reports TIMEOUT in parallel/test-https-agent-unref-socket:

=== release test-https-agent-unref-socket ===
Path: parallel/test-https-agent-unref-socket
Command: out/Release/node /builds/vbatrla/node-aug12/components/nodejs14/build/amd64/test/parallel/test-https-agent-unref-socket.js
--- TIMEOUT ---

How often does it reproduce? Is there a required condition?

reproduces always on machine without internet connection

What is the expected behavior?

test should pass

What do you see instead?

test times out

Additional information

No response

[richardlau]

#39011 was included in 14.18.0: #39990.