Enable oslo.cache library

Add barbican:server:cache metadata

      cache:
        engine: memcached
        expiration_time: 600
        backend_argument:
          memcached_expire_time:
            value: 660

Enable oslo.cache in the barbican.conf file

Change-Id: I2d7c319fe1fb788c9d583f8b17dbf159597dac78
Related-Prod: PROD-26960
5 files changed