Ignores some keys that might be different without any important info.
    These keys are defined under _DO_NOT_COMPARE_FIELDS.

def _ignore_keys(endpoint_props):
    '''
    Ignores some keys that might be different without any important info.
    These keys are defined under _DO_NOT_COMPARE_FIELDS.
    '''
    return dict(
        (prop_name, prop_val)
        for prop_name, prop_val in six.iteritems(endpoint_props)
        if prop_name not in _DO_NOT_COMPARE_FIELDS
    )