meta-romulus: Add callouts yaml config

Romulus was using the exmaple callouts yaml and it is just a dummy one.
Provide the real callouts yaml config for Romulus.

Tested: With the following commit, verify CALLOUT_INVENTORY_PATH is
        correctly set when CPU error is injected and the event is sent
        to BMC.

Change-Id: I266c51cc52ebdd770dd332c50e26ed3e8cd65155
Signed-off-by: Lei YU <mine260309@gmail.com>
3 files changed