Add Certs Manager interface.

xyz.openbmc_project.Certs.Certificate provides the properties
for the specific certificates.

Currently KeyUsage property limited to support
ClientAuthentication, KeyCertSign, ServerAuthentication purpose.

Properties are based on the Redfish (DSP2046: 2018.3)
certificate schema.

Change-Id: I2bf74cb43ebb27d1aa6cf570c7f06b148b86ea49
Signed-off-by: Jayanth Othayoth <ojayanth@in.ibm.com>
2 files changed