Don't throw an IllegalStateException EipStatus.setEipLevel

For some reason (that should be investigated) openvpn can get an ConnectionStatus LEVEL_VPNPAUSED which bitmask doesn't supports. There are several crash reports on google play console because we're throwing an IllegalStateException here:

private void setEipLevel(ConnectionStatus level) {
        switch (level) {
            case LEVEL_CONNECTED:
                currentEipLevel = EipLevel.CONNECTED;
                break;
            case LEVEL_VPNPAUSED:
                throw new IllegalStateException("Ics-Openvpn's VPNPAUSED state is not supported by Bitmask");
            case LEVEL_CONNECTING_SERVER_REPLIED:

we should fix the reason why we get into that state and could think about a more graceful error handling.