Refactor buck external dependencies

Change-Id: Ia4b99493407eb7d4e893804cba6b944f758f085e
diff --git a/drivers/bti/BUCK b/drivers/bti/BUCK
index c7c713d..da0ac30 100644
--- a/drivers/bti/BUCK
+++ b/drivers/bti/BUCK
@@ -6,6 +6,7 @@
     '//lib:snmp-core',
     '//lib:bti7000',
     '//lib:mibs-net-snmp',
+    '//lib:joda-time',
 ]
 
 TEST_DEPS = [