Register new Control.Host bus in ipmid

This sets up the framework for future commits to implement
the required interfaces and signals in Control.Host

Change-Id: I43cd7d3047ed9cfbf1a01e7ba3a0310e9d47c307
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
diff --git a/host-services.hpp b/host-services.hpp
new file mode 100644
index 0000000..4c2ddad
--- /dev/null
+++ b/host-services.hpp
@@ -0,0 +1 @@
+#include <systemd/sd-bus.h>