look for HTTP code 410 in response to PUT /v2/wallet/{paymentId}

[mrose17]

if the PUT call to /v2/wallet/{paymentId} sees HTTP code 410 immediately prior to https://github.com/brave-intl/bat-client/blob/master/index.js#L936 this indicates that the earlier call at https://github.com/brave-intl/bat-client/blob/master/index.js#L936 to get the current surveyor information is no longer valid.

instead of invoking the callback with an error, the client should fetch the new current surveyor and try again. however, to avoid looping, it should do this at most once.