fix(tests): fixed db migration tests after introduction of RC_TEST flag

rhodecode/__init__.py

@@ -87,5 +87,5 b' EXTENSIONS = {}'
 __author__ = 'RhodeCode GmbH'
 __url__ = 'https://code.rhodecode.com'
 
-is_test = os.getenv('RC_TEST')
+is_test = os.getenv('RC_TEST', '0') == '1'
 disable_error_handler = False

rhodecode/tests/database/conftest.py

@@ -89,6 +89,7 b' class DBBackend(object):'
                                       'startup.import_repos': 'false'}}]
     _db_url = [{'app:main': {'sqlalchemy.db1.url': ''}}]
     _base_db_name = 'rhodecode_test_db_backend'
+    std_env = {'RC_TEST': '0'}
 
     def __init__(
             self, config_file, db_name=None, basetemp=None,
@@ -134,13 +135,15 b' class DBBackend(object):'
         """
 
         command = cmd + ' ' + ' '.join(args)
-        sys.stdout.write(command)
+        sys.stdout.write(f'CMD: {command}')
 
         # Tell Python to use UTF-8 encoding out stdout
         _env = os.environ.copy()
         _env['PYTHONIOENCODING'] = 'UTF-8'
+        _env.update(self.std_env)
         if env:
             _env.update(env)
+
         self.p = Popen(command, shell=True, stdout=PIPE, stderr=PIPE, env=_env)
         self.stdout, self.stderr = self.p.communicate()
         stdout_str = safe_str(self.stdout)