really use hostname that is extracted for ping

crypt-initrd-extra-files/scripts/local-top/cryptroot-api

@@ -105,10 +105,10 @@ setup_mapping()
     notify_command="curl -X POST -H \"Authorization: Bearer $api_key\" -H \"Content-Type: application/json\" -d '{\"template\":\"ENCVMBOOTED\",\"HOSTNAME\":\"$(hostname)\",\"identifier\":\"instance-$instance_id\"}' $cosmos_url/api/v2/communication/sendmessage"
 
     timeout=6
-    url=$(echo $url | sed -e 's/http[s]*:\/\/\([^:/]*\).*/\1/i')
+    hostname=$(echo $cosmos_url | sed -e 's/http[s]*:\/\/\([^:/]*\).*/\1/i')
 
     # Wait until API is reachable (network interface = up)
-    wait_for_connection $cosmos_url $timeout
+    wait_for_connection $hostname $timeout
 
     # Start cryptops API even if API is not reachable, because the only problem
     # is the user would not get notified of startup.