Fix build error

Fix build error

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=811741
ragel: FTBFS with GCC 6: narrowing conversion
 - Explicitly set C++ standard to C++98 to fix compilation under GCC 6

[Model] All
[BinType] AP
[Customer] OPEN

[Issue#] N/A
[Request] N/A
[Occurrence Version] N/A

[Problem] build error
[Cause & Measure] Explicitly set c++98
[Checking Method] N/A

[Team] Open Source Management and Setting Part
[Developer] dh0128.kwak
[Solution company] Samsung
[Change Type] N/A

Change-Id: I455b97ef2cf38b6f823c4c7b57d60fbc0e8bc3bf
Signed-off-by: DongHun Kwak <dh0128.kwak@samsung.com>