fluxplug: instruct curl to return the HTTP code

Signed-off-by: Nagy Károly Gábriel <k@jpi.io>

master

@@ -1,6 +1,6 @@
 #!/bin/sh
 myhost=$(/bin/hostname -f)
-CURL="/usr/bin/curl -is -u user:password -XPOST 'http://influxdb.url/write?db=jpi' --data-binary "
+CURL="/usr/bin/curl -is -o /dev/null -w \"%{http_code}\\\n\" -u user:password -XPOST 'http://influxdb.url/write?db=jpi' --data-binary "
 AWK="/usr/bin/awk"
 WC="/usr/bin/wc"
 DF="/bin/df -t ext4 "