Make the - sales part optional from regex as per HEA-1009

Author: girumb

pipelines/assets/livelihood_activity_regexes.json

@@ -476,7 +476,7 @@
         "percentage_sold_slaughtered"
     ],
     [
-        "{product_pattern} sales{separator_pattern} {nbr_pattern} sold",
+        "{product_pattern}(?: sales)?{separator_pattern} {nbr_pattern} sold",
         "LivestockSale",
         true,
         "quantity_sold"

pipelines_tests/test_assets/test_livelihood_activity_regexes.json

@@ -145,6 +145,24 @@
         "product_id": "cattle",
         "attribute": "quantity_sold"
     },
+    "cattle sales - local: no. sold": {
+        "strategy_type": "LivestockSale",
+        "is_start": true,
+        "product_id": "cattle sales - local",
+        "attribute": "quantity_sold"
+    },
+    "goat sales - local: no. sold": {
+        "strategy_type": "LivestockSale",
+        "is_start": true,
+        "product_id": "goat sales - local",
+        "attribute": "quantity_sold"
+    },
+    "pig sales - local: no. sold": {
+        "strategy_type": "LivestockSale",
+        "is_start": true,
+        "product_id": "pig sales - local",
+        "attribute": "quantity_sold"
+    },
     "cattle offtake (% sold/slaughtered)": {
         "product_id": "cattle",
         "attribute": "percentage_sold_slaughtered"