Replace server connection close API

Replace server connection close API

In signal handler, fds will be closed in fd-id table,
but, closed fd by muse_core_connection_close is not removed from table.
It can cause unexpected behavior in signal handler,
so new API is added and it removes closed fd in fd-id table.

[Version] 0.3.5
[Profile] Common
[Issue Type] Update
[Dependency module] N/A
[Test] [M(T) - Boot=(OK), sdb=(OK), Home=(OK), Touch=(OK), Version=tizen-unified_20170825.1]

Change-Id: I2df5af4bc835bd92ea25170175e9e5fafe9cc54e
Signed-off-by: Jeongmo Yang <jm80.yang@samsung.com>