qemuimage-testlib: Fix the check for running qemu processes

Previously, any active command containing the word "qemu" including
in the command path would trigger a "success" result for detecting
the qemu process. This change fixes the check to search for commands
starting with "qemu" and ignores pathnames.

It also shortens the timeout for the qemu process to appear to 10
seconds. If it doesn't appear in that time there is always a problem.

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

scripts/qemuimage-testlib

@@ -204,8 +204,8 @@ Test_Kill_Qemu()
 # function to check if there is any qemu process
 Test_Check_Qemu_UP()
 {
-	local count=`ps -ef | grep -c qemu`
-	if [ ${count} -lt 2 ]; then
+	local count=`ps -eo command | cut -d " " -f 1 | grep -c \(^qemu\|.*/qemu\)`
+	if [ ${count} -lt 1 ]; then
 		Test_Info "There is no Qemu process"
 		return 1
 	else
@@ -402,9 +402,7 @@ Test_Create_Qemu()
 	# Get the pid of the xterm processor, which will be used in Test_Kill_Qemu
 	PID=$!
 
-	sleep 5
-	
-	while [ ${up_time} -lt ${timeout} ]
+	while [ ${up_time} -lt 10 ]
 	do
 		Test_Check_Qemu_UP
 		if [ $? -ne 0 ]; then