use common date command option between GNU date and BSD date

2017-02-04 01:40:38 +09:00 · 2017-02-04 01:40:38 +09:00 · b0cec1fa2c
commit b0cec1fa2c
--- a/quickstart.sh
+++ b/quickstart.sh
@ -282,7 +282,7 @@ md5sum ./data/osmstat.txt                     >> ./data/quickstart_checklist.chk
 cat ./data/quickstart_checklist.chk

 ENDTIME=$(date +%s)
-ENDDATE=$(date -Iminutes)
+ENDDATE=$(date +"%Y-%m-%dT%H:%M%z")
 MODDATE=$(stat -c  %y  ./data/${testdata} )

 echo " "