ksmbd: follow SMB2 session expiration semantics

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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                        "fs/smb/server/connection.c",
                        "fs/smb/server/connection.h",
                        "fs/smb/server/mgmt/user_session.c",
                        "fs/smb/server/mgmt/user_session.h",
                        "fs/smb/server/proc.c",
                        "fs/smb/server/server.c",
                        "fs/smb/server/smb2pdu.c",
                        "fs/smb/server/smb2pdu.h",
                        "fs/smb/server/stats.h"
                    ],
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                }

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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/connection.c",
                        "fs/smb/server/connection.h",
                        "fs/smb/server/mgmt/user_session.c",
                        "fs/smb/server/mgmt/user_session.h",
                        "fs/smb/server/proc.c",
                        "fs/smb/server/server.c",
                        "fs/smb/server/smb2pdu.c",
                        "fs/smb/server/smb2pdu.h",
                        "fs/smb/server/stats.h"
                    ],
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                }