POST to service_categories returns blank name

[ocket8888]

This Bug Report affects these Traffic Control components:

• Traffic Ops

Current behavior:

$ topost -kp service_categories '{"name": "test"}'
{
	"alerts": [
		{
			"text": "serviceCategory was created.",
			"level": "success"
		}
	],
	"response": {
		"lastUpdated": "2022-10-12 17:57:14+00",
		"name": ""
	}
}

Expected behavior:

According to the docs (and what would make sense) the name field is supposed to be populated with the name it actually created. Since the current docs example shows it working that way, I'm going to assume that it used to so this is a regression bug.

Steps to reproduce:

topost -kp service_categories '{"name": "test"}'