Count land in Pension Credit capital proxy

Author: MaxGhenis

policyengine_uk/parameters/gov/dwp/pension_credit/income/capital/sources.yaml

@@ -16,6 +16,7 @@ metadata:
 values:
   2003-10-06:
     - savings
+    - owned_land
     - other_residential_property_value
     - non_residential_property_value
     - corporate_wealth

policyengine_uk/tests/policy/baseline/gov/dwp/pension_credit/pension_credit_deemed_income.yaml

@@ -66,6 +66,23 @@
     pension_credit_assessable_capital: 10_501
     pension_credit_deemed_income: 104
 
+- name: Pension Credit counts direct land holdings as capital.
+  period: 2021
+  input:
+    people:
+      person:
+        age: 70
+    benunits:
+      benunit:
+        members: person
+    households:
+      household:
+        members: person
+        owned_land: 10_001
+  output:
+    pension_credit_assessable_capital: 10_001
+    pension_credit_deemed_income: 52
+
 - name: Pension Credit does not dilute pensioner capital across unrelated adult benunits.
   period: 2021
   input: