To avoid confusion, log Content-Type header missing on level DATA

Author: Chris Wiechmann

src/main/java/com/axway/apim/openapi/validator/Utils.java

@@ -85,7 +85,8 @@ public static Collection<String> getHeaderValues(HeaderSet headers, String name)
 		HeaderEntry headerValues = headers.getHeaderEntry(name);
 		if(headerValues==null) {
 			if(name.toLowerCase().equals("content-type")) {
-				traceMessage("Header: Content-Type not found. Defaulting to application/json", TraceLevel.DEBUG);
+				// For any reason, the API-Gateway at runtime is removing the Content-Type header from the attribute http.headers
+				traceMessage("Header: Content-Type not found. Defaulting to application/json.", TraceLevel.DATA);
 				result.add("application/json");
 				return result;
 			} else {