change current task order table name

rename existing task order factory

fix legacy task order repr

alembic/versions/3dc8b7961bd1_rename_task_orders.py

@@ -0,0 +1,24 @@
+"""rename task orders
+
+Revision ID: 3dc8b7961bd1
+Revises: 02d11579a581
+Create Date: 2018-12-12 13:17:25.728679
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '3dc8b7961bd1'
+down_revision = '02d11579a581'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.rename_table("task_orders", "legacy_task_orders")
+
+
+def downgrade():
+    op.rename_table("legacy_task_orders", "task_orders")