Speed up 'netctl list'

When you call `netctl list`, it calls `systemctl status` for each of the
profiles. By default, `systemctl status` fetches the last log entries from the
journal, which is often a time-consuming operation. Additionally, the status
output is not meant for machine processing.

src/lib/globals

@@ -144,7 +144,7 @@ sd_call() {
 ## Retrieves the status string from the unit for a profile
 # $1: profile name
 sd_status_text() {
-    sd_call status "$1" | sed -n 's/^ *Status: "\(.*\)"$/\1/p'
+    sd_call "show --property=StatusText --value" "$1"
 }