Added faker as a testing requirement

setup/energy_communities/setup.py

@@ -2,6 +2,9 @@ import setuptools
 
 setuptools.setup(
     setup_requires=['setuptools-odoo'],
+    extras_require={
+        'testing': ['faker'],
+    },
     odoo_addon={
         "depends_override": {
             "account_lock_date_update": "odoo14-addon-account-lock-date-update==14.0.2.0.1.dev10",