Added missing call to rpower stat to rpower_softoff testcase

xCAT-test/autotest/testcase/rpower/cases0

@@ -144,6 +144,7 @@ Attribute: $$CN-The operation object of rpower command
 label:cn_bmc_ready,hctrl_fsp,hctrl_openbmc
 cmd:rpower $$CN on
 cmd:a=0;while ! `rpower $$CN stat|grep "Running\|on" >/dev/null`; do sleep 5;((a++));if [ $a -gt 11 ];then break;fi done
+cmd:rpower $$CN stat
 check:output=~Running|on
 cmd:rpower $$CN softoff
 check:rc==0