Resource check login and password combination is valid.
    ---
    request_serializer: serializers.CheckLoginPassword
    response_serializer: serializers.User

    responseMessages:
        - code: 200
          message: Login and password is valid

        - code: 400
          message: Login and password is not valid

        - code: 401
          message: Unauthorized

def check_login_password(request):
    """
    Resource check login and password combination is valid.
    ---
    request_serializer: serializers.CheckLoginPassword
    response_serializer: serializers.User

    responseMessages:
        - code: 200
          message: Login and password is valid

        - code: 400
          message: Login and password is not valid

        - code: 401
          message: Unauthorized
    """
    serializer = serializers.CheckLoginPassword(request=request, data=request.data)
    serializer.is_valid(raise_exception=True)
    username = serializer.validated_data['username']
    logger.debug('Username and password correct', extra={'username': username})
    user_serializer = serializers.User(instance=serializers.AuthUser.objects.get(username=username))
    return Response(user_serializer.data)