bdd: import API test DB as part of step setup

In the future, the BDD tests will simply set up the required
test database themselves. Like with the template database, it
is not reimported when it already exists unless that is explicitly
forced.

Makes most of the API tests currently fail because they still
point to old test data.

test/bdd/environment.py

@@ -4,8 +4,10 @@ from pathlib import Path
 from steps.geometry_factory import GeometryFactory
 from steps.nominatim_environment import NominatimEnvironment
 
+TEST_BASE_DIR = Path(__file__) / '..' / '..'
+
 userconfig = {
-    'BUILDDIR' : (Path(__file__) / '..' / '..' / '..' / 'build').resolve(),
+    'BUILDDIR' : (TEST_BASE_DIR / '..' / 'build').resolve(),
     'REMOVE_TEMPLATE' : False,
     'KEEP_TEST_DB' : False,
     'DB_HOST' : None,
@@ -15,6 +17,7 @@ userconfig = {
     'TEMPLATE_DB' : 'test_template_nominatim',
     'TEST_DB' : 'test_nominatim',
     'API_TEST_DB' : 'test_api_nominatim',
+    'API_TEST_FILE'  : (TEST_BASE_DIR / 'testdb' / 'apidb-test-data.pbf').resolve(),
     'SERVER_MODULE_PATH' : None,
     'PHPCOV' : False, # set to output directory to enable code coverage
 }