Refactor buck external dependencies

Change-Id: Ia4b99493407eb7d4e893804cba6b944f758f085e
diff --git a/core/security/BUCK b/core/security/BUCK
index dc17338..c9a6a91 100644
--- a/core/security/BUCK
+++ b/core/security/BUCK
@@ -1,5 +1,6 @@
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
+    '//lib:KRYO',
     '//core/store/serializers:onos-core-serializers',
 ]