squash! src: add --openssl-legacy-module option

Fix test issues.

Author: danbev

test/parallel/test-process-env-allowed-flags-are-documented.js

@@ -47,7 +47,7 @@ const conditionalOpts = [
     filter: (opt) => {
       return [
         '--openssl-config',
-        '--openssl-legacy-module',
+        common.hasOpenSSL3 ? '--openssl-legacy-module' : '',
         '--tls-cipher-list',
         '--use-bundled-ca',
         '--use-openssl-ca',
@@ -97,7 +97,6 @@ assert(undocumented.delete('--no-node-snapshot'));
 assert(undocumented.delete('--loader'));
 assert(undocumented.delete('--verify-base-objects'));
 assert(undocumented.delete('--no-verify-base-objects'));
-assert(undocumented.delete('--no-openssl-legacy-module'));
 
 // Remove negated versions of the flags.
 for (const flag of undocumented) {