Plugin test option crashes

[lnedry]

Describe the bug
When running the Haraka plugin test option, e.g. "haraka -c /etc/haraka -t graph", Haraka will crash. It doesn't matter which plugin is being tested or which other options are included with the test. I chose graph for this example because it is very simple and doesn't have a configuration.

Expected behavior
I expected some tests to be run.

Observed behavior
Haraka crashes.

/usr/lib/node_modules/Haraka/connection.js:134
        if (this.cfg.headers.show_version) {
                     ^

TypeError: Cannot read properties of undefined (reading 'headers')
    at new Connection (/usr/lib/node_modules/Haraka/connection.js:134:22)
    at exports.createConnection (/usr/lib/node_modules/Haraka/connection.js:1888:12)
    at Object.<anonymous> (/usr/lib/node_modules/Haraka/bin/haraka:533:35)
    at Module._compile (node:internal/modules/cjs/loader:1159:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1213:10)
    at Module.load (node:internal/modules/cjs/loader:1037:32)
    at Module._load (node:internal/modules/cjs/loader:878:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:23:47

Steps To Reproduce
haraka -c /etc/haraka -t graph

System Info:

Haraka	Haraka.js — Version: 3.0.0
Node	v18.12.1
OS	Linux mautic.wbnms.com 5.10.0-19-amd64 #1 SMP Debian 5.10.149-2 (2022-10-21) x86_64 GNU/Linux
openssl	OpenSSL 1.1.1n 15 Mar 2022

Additional context
My guess is that line 533 in bin/haraka should also pass some config information.
Also, line 134 in connection.js should probably test for cfg and cfg.headers