CB-8096 Pended auto tests if accelerometer doesn't exist on the device

https://issues.apache.org/jira/browse/CB-8096
1. To generic variable name, rename isAccelExist -> isAccelExistWidows since this check applies to Windows only
2. I think this breaks check on non-Widnows devices since isAccelExist is always FALSE on non-Windows platforms

You should do
if (isWindows && !isAccelExistWindows) {
    pending
}