buffet: Set default for localPairingEnabled to false

There is no local pairing without local discover.

BUG=brillo:810
TEST=test_that -b $BOARD $DEV_HOST e:buffet_.*

Change-Id: I586a25423379522279ff7697c97ee946e59cf793
Reviewed-on: https://chromium-review.googlesource.com/270766
Tested-by: Vitaly Buka <vitalybuka@chromium.org>
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>

buffet/etc/buffet/base_state.defaults.json

diff --git a/buffet/etc/buffet/base_state.defaults.json b/buffet/etc/buffet/base_state.defaults.json
index e48afb9..166f2f1 100644
--- a/buffet/etc/buffet/base_state.defaults.json
+++ b/buffet/etc/buffet/base_state.defaults.json
@@ -3,6 +3,6 @@
     "firmwareVersion": "",
     "localDiscoveryEnabled": false,
     "localAnonymousAccessMaxRole": "none",
-    "localPairingEnabled": true
+    "localPairingEnabled": false
   }
 }