Use h: as short form of host in log lines

Before the rename from hosts were called slave which is why s: made
sense. Use h: instead.

packages/lib/src/logging.ts

@@ -73,7 +73,7 @@ export class WebConsoleFormat {
 	transform(info: any, _options: object) {
 		let src = " ";
 		if (info.host_id !== undefined) {
-			src += `s:${info.host_name} - `;
+			src += `h:${info.host_name} - `;
 		}
 		if (info.instance_id !== undefined) {
 			src += `i:${info.instance_name}`;

packages/lib/src/logging_utils.ts

@@ -163,7 +163,7 @@ export class TerminalFormat {
 			src += `i:${info.instance_name} `;
 
 		} else if (info.host_name) {
-			src += `s:${info.host_name} `;
+			src += `h:${info.host_name} `;
 		}
 		if (info.plugin) {
 			src += `${info.plugin}: `;