Incorrect error message from /servers/details when no query string parameter given

[ocket8888]

This Bug Report affects these Traffic Control components:

• Traffic Ops

Current behavior:

/servers/details requires one of the query string parameters hostName or physLocationID be specified, but if neither are, the error message says:

{
	"alerts": [
		{
			"text": "Missing required fields: 'hostname' or 'physLocationID'",
			"level": "error"
		}
	]
}

Expected behavior:

The error message should name the actual required query string parameter: hostName not hostname.

Steps to reproduce:

1. toget -kp '/servers/details?hostname=anything'