Return instance of the dependancies manager using given args and kwargs

        Add 'silent_key_error' option in kwargs if not given.

def get_deps_manager(self, *args, **kwargs):
        """
        Return instance of the dependancies manager using given args and kwargs

        Add 'silent_key_error' option in kwargs if not given.
        """
        if 'silent_key_error' not in kwargs:
            kwargs['silent_key_error'] = self.silent_key_error
        return self.deps_manager(*args, **kwargs)