[RCS] Update sepolicy for RCS

Fix seapp_contexts sepolicy for shannon-rcs, where
:shannonrcsservice process exceptions are not handled

Bug: 190581528
Signed-off-by: Myung-jong Kim <mj610.kim@samsung.com>
Change-Id: I15cbf103cea70f6db878305a8fca6b35aa521f9b
1 file changed