Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/a9d85e4fb4ea
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #14893 from joshthecoder/bug947563

Bug 947563 - [Settings] Wifi hotspot settings... r=crh0716

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https://hg.mozilla.org/integration/gaia-central/rev/0a2b44007514
Author: Joshua Roesslein <jroesslein@gmail.com>
Desc: Bug 947563 - [Settings] Wifi hotspot settings...

...prevent users pressing OK w/o any error messages.

 - Removed password field in internet sharing panel.
 - Move security section before password.
 - Add password desc displayed when security option is NOT "open".