[Context] Propergate property to model

[Context] Propergate property to model

This patch is for app properties propergation.
App properties is described in global configuration file (ini),
and the properties are under section, which only have a meaning for
human readability. It means section deos not have any real role for
behavior. Propergated properties can be used in anywhere in the network.
In this patch include 'memmory_swap' and 'memory_swap_path' which is
used for Model flex properties.

Signed-off-by: Jiho Chu <jiho.chu@samsung.com>