Dbus interface for "factory reset"

This commit defines a dbus interface to factory reset a particular
system. The defined interface will be implemented by each service
(host, BMC, network).

Resolves openbmc/openbmc#1573

Change-Id: I94e37fc2275f742c50f864a29094227da6144026
Signed-off-by: Michael Tritz <mtritz@us.ibm.com>
diff --git a/xyz/openbmc_project/Common/FactoryReset.interface.yaml b/xyz/openbmc_project/Common/FactoryReset.interface.yaml
new file mode 100644
index 0000000..cc5c682
--- /dev/null
+++ b/xyz/openbmc_project/Common/FactoryReset.interface.yaml
@@ -0,0 +1,6 @@
+description: >
+    An interface to reset the target service to its factory state.
+methods:
+    - name: Reset
+      description: >
+          Generic method to start factory reset. Implemented by each service.