Adding ability to configure OVS logging

The patch adds ability to configure variety logging options
for OVS. In order to configure OVS log options the below pillar
sctructure should be used:

  linux:
    network:
      openvswitch:
        enabled: true
        logging:
          enabled: true
          ovsdb:
            console: emer
            syslog: err
            file: info
            facility: local0
          vswitchd:
            console: emer
            syslog: err
            file: info
            facility: local1

Change-Id: I59ef0636447a974215d872259a26beb858495cfb
Related-PROD: PROD-19980
3 files changed