Add timeout into checking invalid input condition

Add timeout into checking invalid input condition

- Patch 1: If timeout is 0, return error.
- Patch 2: Add unittest
- Patch 3: Modify file mode

Change-Id: I571615ffe4d00dc1feff94d9b39525eabc75d215
Signed-off-by: js126.lee <js126.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/6061
Reviewed-by: Yonggoo Kang <ygace.kang@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Randeep Singh <randeep.s@samsung.com>
(cherry picked from commit 92a40d711d88dddba9476640e8b8204c2f60b0ba)
Reviewed-on: https://gerrit.iotivity.org/gerrit/6069
Tested-by: Randeep Singh <randeep.s@samsung.com>