test: add callout-test

Add test program which can create callouts based on an input device
path. It creates an error, with callouts, with name TestCallout.

Change-Id: I96b66b73ae4a9c00daff06222841a13747c07408
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
diff --git a/tools/example/xyz/openbmc_project/Example/Elog.errors.yaml b/tools/example/xyz/openbmc_project/Example/Elog.errors.yaml
index d968823..77dacdb 100644
--- a/tools/example/xyz/openbmc_project/Example/Elog.errors.yaml
+++ b/tools/example/xyz/openbmc_project/Example/Elog.errors.yaml
@@ -6,3 +6,6 @@
 
 - name: AutoTestSimple
   description: This is a simple test error.
+
+- name: TestCallout
+  description: This is test error TestCallout