Add network metadata support for vmware metadata service

- Added parsing of vmware metadata as NetworkDetailsV2
- Using NoCloudNetworkConfigV1Parser for parsing the data
- Functionality is analog to cloud-init

Author: Tervooren, Dominik

cloudbaseinit/metadata/services/vmwareguestinfoservice.py

@@ -25,6 +25,7 @@
 from cloudbaseinit.metadata.services import base
 from cloudbaseinit.osutils import factory as osutils_factory
 from cloudbaseinit.utils import serialization
+from cloudbaseinit.metadata.services.nocloudservice import NoCloudNetworkConfigV1Parser
 
 CONF = cloudbaseinit_conf.CONF
 LOG = oslo_logging.getLogger(__name__)
@@ -151,3 +152,23 @@ def get_admin_username(self):
 
     def get_admin_password(self):
         return self._meta_data.get('admin-password')
+    
+    def get_network_details_v2(self):
+        try:
+            raw_data = self._meta_data.get('network-config', decode=True)
+            network_data = serialization.parse_json_yaml(raw_data)
+        except base.NotExistingMetadataException:
+            LOG.info("V2 network metadata not found")
+            return
+        except serialization.YamlParserConfigError:
+            LOG.exception("V2 network metadata could not be deserialized")
+            return
+
+        network_data_version = network_data.get('version')
+        if network_data_version != 1:
+            LOG.error("Network data version '%s' is not supported",
+                      network_data_version)
+            return
+
+        network_config_parser = NoCloudNetworkConfigV1Parser()
+        return network_config_parser.parse(network_data.get("config"))