Host interface commands

At times the OpenBMC needs to interface with the host.
These are the supported commands to send to the host.

Change-Id: I376716336af7b8f3fdfd1a385d7ed5c4e6ba058b
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
diff --git a/xyz/openbmc_project/Control/Host.errors.yaml b/xyz/openbmc_project/Control/Host.errors.yaml
new file mode 100644
index 0000000..c4918a6
--- /dev/null
+++ b/xyz/openbmc_project/Control/Host.errors.yaml
@@ -0,0 +1,4 @@
+#xyz.openbmc_project.Control.Host.CommandNotSupported
+- name: CommandNotSupported
+  description: Command is not supported
+