Add ability to have several servers
diff --git a/core/kg/go.sum b/core/kg/go.sum
index 114f18a..04cc7b0 100644
--- a/core/kg/go.sum
+++ b/core/kg/go.sum
@@ -229,6 +229,8 @@
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
+github.com/vardius/shutdown v1.0.2 h1:wNHRpdYc+KvJ3Q9KmkwKiqsnaW5LfkcP9ElXXv0OpC4=
+github.com/vardius/shutdown v1.0.2/go.mod h1:rvvQd32kv5NJycU1l4VJtqrJKY0Gg0IoQpVxZJeL44M=
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=