builds: Temporarily switch nightly Bulgarian voice back to 'espeak'

Turns out the 'gtts' tool on the buildserver is too old to support
Bulgarian.  Once this is dealt with, go ahead and switch back.

Change-Id: I507b3b736a722569a2050a2e1f61ed4dce210a44

1 files changed, 2 insertions, 1 deletions

diff --git a/tools/builds.pm b/tools/builds.pm
index 6b977b3734..8efd22bbdf 100644
--- a/tools/builds.pm
+++ b/tools/builds.pm
@@ -610,10 +610,11 @@ sub simbuilds {
         'lang' => 'bulgarian',
         'name' => 'Български (Bulgarian)',
         'short' => 'bg',
-        'defengine' => 'gtts',
+        'defengine' => 'espeak',  # XXX Switch to gtts when buildserver is updated
         'engines' => {
             'espeak' => '-vbg',
             'gtts' => '-l bg',
+            # No piper voice yet.
         },
         'enabled' => 1,
     },