Fix issue in 8K fio test.

Azure_ICA_all.xml

@@ -6940,7 +6940,7 @@
 				<param>startIO=8</param>
 				<param>numjobs=1</param>
 				<param>ioruntime=300</param>
-				<param>maxIO=1024</param>		
+				<param>maxIO=8</param>
 				<param>fileSize=134G</param>
 			</TestParameters>
 			<Priority>P0</Priority>