[FS#274] Using 802.11r Fast Transition and LUCI causes the removal of /etc/config/wireless nasid keyword

[LEDE Bugs]

The following task has a new comment added:

FS#274 - Using 802.11r Fast Transition and LUCI causes the removal of /etc/config/wireless nasid keyword 
User who did this - Hannu Nyman (hnyman)

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I pushed a fix to LuCI master with https://github.com/openwrt/luci/commit/f02794f28c343070487bbc794b425f91b675fdb9

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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=274#comment1667