imagetest-qemu: Add sanity test cases for scp/shutdown in target

scp test is to check if file copying via network work or not in target.
shutdown test is to check if target can be poweroff with qemu process off.

Signed-off-by Jiajun Xu <jiajun.xu@intel.com>

scripts/qemuimage-testlib

@@ -151,7 +151,8 @@ Test_Print_Result()
 		NORESULT=1
 	fi
 
-	echo -e "\t$1\t\t$PASS\t$FAIL\t$NORESULT" >> $TEST_RESULT/testresult.log
+	# Format the output of the test result
+	echo -e "$1 $PASS $FAIL $NORESULT" | awk '{printf("\t"); for(i=1;i<=NF;i++) printf("%-15s",$i); printf("\n");}' >> $TEST_RESULT/testresult.log
 }
 
 # Test_Kill_Qemu to kill child pid with parent pid given
@@ -399,6 +400,7 @@ Test_Create_Qemu()
 
 	# Parse IP address of target from the qemu command line
 	if [ ${up_time} -lt ${timeout} ]; then
+		sleep 5
 		TARGET_IPADDR=`Test_Fetch_Target_IP $PID`
 	fi