This patch introduces public Get and Set APIs for modifying <title>,
<description> and <metadata> elements of the Network object.
- Added enum virNetworkMetadataType to select one of the above
elements to operate on.
- Added error code and messages for missing metadata.
- Added public API implementation.
- Added driver support.
Signed-off-by: K Shiva Kiran <shiva_kr@riseup.net>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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