Add example metadata handler implementation
Add example metadata handler implementation

Specialize metadata handler function template to depict implementation
of this interface.

Change-Id: I398db9c0bf1e0649ce7745d67f3345263ef1abcd
Signed-off-by: Deepak Kodihalli <54105a30055f1e07853b8ee7a2f0d75d22ed98c1@in.ibm.com>

openbmc/phosphor-logging,openbmc/phosphor-logging,openbmc/phosphor-logging,openbmc/phosphor-logging