bdd: run all setup via nominatim Python library

Drops all calls to PHP utility functions. nominatim cli functions
are used where possible, to stay as close to the final code as
possible with the tests.

By removing the PHP calls, the test code now only uses osm2pgsql and
the database module from the build directory.

test/bdd/steps/steps_osm_data.py

@@ -1,6 +1,23 @@
 import tempfile
 import random
 import os
+from pathlib import Path
+
+from nominatim.tools.exec_utils import run_osm2pgsql
+
+def get_osm2pgsql_options(nominatim_env, fname, append):
+    return dict(import_file=fname,
+                osm2pgsql=str(nominatim_env.build_dir / 'osm2pgsql' / 'osm2pgsql'),
+                osm2pgsql_cache=50,
+                osm2pgsql_style=str(nominatim_env.src_dir / 'settings' / 'import-extratags.style'),
+                threads=1,
+                dsn=nominatim_env.get_libpq_dsn(),
+                flatnode_file='',
+                tablespaces=dict(slim_data='', slim_index='',
+                                 main_data='', main_index=''),
+                append=append
+               )
+
 
 def write_opl_file(opl, grid):
     """ Create a temporary OSM file from OPL and return the file name. It is
@@ -52,9 +69,10 @@ def load_osm_file(context):
     """
     # create an OSM file and import it
     fname = write_opl_file(context.text, context.osm)
-    context.nominatim.run_setup_script('import-data', osm_file=fname,
-                                       osm2pgsql_cache=300)
-    os.remove(fname)
+    try:
+        run_osm2pgsql(get_osm2pgsql_options(context.nominatim, fname, append=False))
+    finally:
+        os.remove(fname)
 
     ### reintroduce the triggers/indexes we've lost by having osm2pgsql set up place again
     cur = context.db.cursor()
@@ -80,5 +98,7 @@ def update_from_osm_file(context):
 
     # create an OSM file and import it
     fname = write_opl_file(context.text, context.osm)
-    context.nominatim.run_update_script(import_diff=fname)
-    os.remove(fname)
+    try:
+        run_osm2pgsql(get_osm2pgsql_options(context.nominatim, fname, append=True))
+    finally:
+        os.remove(fname)