[Issue#] N/A
[Problem] Build break.
[Cause] Lack of header file unistd.h (function unlink was
undefined) in open-for-manager.cpp and password-file.cpp
(function close was undefined).
[Solution] Fix header list.
[Verification] Build.
Change-Id: If5b4d4f76677431162fded7f833fcaf915f65db9
#include <sys/types.h>
#include <dirent.h>
#include <fcntl.h>
+#include <unistd.h>
#include <sys/smack.h>
#include <smack-check.h>
#include <fcntl.h>
#include <string.h>
+#include <unistd.h>
namespace {
const std::string DATA_DIR = "/opt/data/security-server";