traffic_packets: replace share_name from netlogon to IPC$ for packet_srvsvc_16

traffic_packets: replace share_name from netlogon to IPC$ for packet_srvsvc_16

Sharename list for Windows:

    Sharename       Type      Comment
    ---------       ----      -------
    ADMIN$          Disk      Remote Admin
    C$              Disk      Default share
    IPC$            IPC       Remote IPC

For Samba:

    Sharename       Type      Comment
    ---------       ----      -------
    netlogon        Disk
    sysvol          Disk
    IPC$            IPC       IPC Service

While test packet_srvsvc_16 with share_name `netlogon`,
it passed Samba, and got a WERR_NERR_NETNAMENOTFOUND error for Windows.

Change share name to `IPC$` so Samba and Windows have it in common.

Signed-off-by: Joe Guo <joeg@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>