debian: osmo-remsim-client-s2 'Replaces' osmo-remsim-client

The package used to be called differently, let's make sure the new
is treated as a successor to the old one.

Change-Id: I4102409b7ae0d18dae83be50c28c0236083d3d1f
diff --git a/debian/control b/debian/control
index 47033fb..daa8dc6 100644
--- a/debian/control
+++ b/debian/control
@@ -62,6 +62,8 @@
  and receives inbound connections from remsim-clients.
 
 Package: osmo-remsim-client-st2
+Replaces: osmo-remsim-client
+Breaks: osmo-remsim-client
 Architecture: any
 Multi-Arch: same
 Depends: ${shlibs:Depends}, ${misc:Depends}