V2T migration: Cleanup unused ports post migration

Change-Id: I36db2f1be84adb723774d09cc7192929ce0fe60f

vmware_nsx/shell/admin/plugins/nsxp/resources/migration.py

@@ -50,6 +50,19 @@ def post_v2t_migration_cleanups(resource, event, trigger, **kwargs):
                                           section['id'])
                 continue
 
+    # cleanup migrated DVS ports (belong to the edges that are not in use)
+    segments = nsxpolicy.segment.list()
+    for seg in segments:
+        # skip non-neutron segments
+        if not p_utils.is_neutron_resource(seg):
+            continue
+        ports = nsxpolicy.segment_port.list(seg['id'])
+        # find the non-neutron ports and delete them
+        for port in ports:
+            if not p_utils.is_neutron_resource(port):
+                nsxpolicy.segment_port.delete(seg['id'], port['id'])
+                LOG.error("Deleted migrated non-neutron port %s", port['id'])
+
 
 @admin_utils.output_header
 def migration_tier0_redistribute(resource, event, trigger, **kwargs):

vmware_nsx/shell/admin/plugins/nsxp/resources/utils.py

@@ -137,3 +137,11 @@ class NsxPolicyPluginWrapper(plugin.NsxPolicyPlugin):
                         fwaas_callbacks_v2.NsxpFwaasCallbacksV2,
                         None)
                 return
+
+
+def is_neutron_resource(resource):
+    # Return True if the resource has the neutron marking tag
+    for tag in resource.get('tags', []):
+        if tag.get('scope') == 'os-api-version':
+            return True
+    return False