support stat less than 1G

Change-Id: I0a1fcfd5e545adee98a8d94ea3fbcd4ea8c7c063
Signed-off-by: Grinberg Moti <mg877n@att.com>
diff --git a/sdc-os-chef/scripts/docker_stats.sh b/sdc-os-chef/scripts/docker_stats.sh
index 0047fe4..1759569 100644
--- a/sdc-os-chef/scripts/docker_stats.sh
+++ b/sdc-os-chef/scripts/docker_stats.sh
@@ -30,6 +30,10 @@
   d=$6"-"$2"-"substr("00",0,2-length($3))$3"-"substr($4,0,5)
   next
 }
+/MiB/ {
+   print $1" "d" "$3/1024" "$8
+   next
+}
 /GiB/ {
    print $1" "d" "$3" "$8
    next