new IP trunk migration

Add IP trunk migration, including a refactor of the IP trunk model

gso/migrations/versions/2023-08-16_e68720f2ec32_add_ip_trunk_migration_workflow.py

+"""Add IP Trunk migration workflow.
+
+Revision ID: e68720f2ec32
+Revises: a6eefd32c4f7
+Create Date: 2023-08-16 14:48:00.227803
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = 'e68720f2ec32'
+down_revision = 'a6eefd32c4f7'
+branch_labels = None
+depends_on = None
+
+
+from orchestrator.migrations.helpers import create_workflow, delete_workflow
+
+new_workflows = [
+    {
+        "name": "migrate_iptrunk",
+        "target": "MODIFY",
+        "description": "Migrate an IP Trunk",
+        "product_type": "Iptrunk"
+    }
+]
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+    for workflow in new_workflows:
+        create_workflow(conn, workflow)
+
+
+def downgrade() -> None:
+    conn = op.get_bind()
+    for workflow in new_workflows:
+        delete_workflow(conn, workflow["name"])