Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/ae1f73e5d882
Author: Marina <marina.rodrigueziglesias@telefonica.com>
Desc: Merge pull request #27880 from gitmai/bug-1128493-widget-do-not-work-after-data-sim-change

Bug 1128493 - [CostControl] Widget broken after switching data sim
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/cf2b90cfb4b2
Author: mai <mri@tid.es>
Desc: Bug 1128493 - [CostControl] Widget broken after switching data sim

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https://hg.mozilla.org/integration/gaia-central/rev/d061a682cf90
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1126613 - merge pull request #28035 from mikehenrty:bug-1126613-utility-tray-rtl to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/5f453e776c69
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1126613 - Ensure utility tray always opens to left of SHB no matter doc dir

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "2a81c277ad8f93b1329d3bc4b94a991292f6a3c3", 
+        "git_revision": "01e4555974f19757f1add02c6ffec1d596d4209f", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "c49fd653e8a03a5c061540e06896c06fb34f23c1", 
+    "revision": "ae1f73e5d882ab05951fbda2bb12e8eb2ad68e1e", 
     "repo_path": "integration/gaia-central"
 }