DLR for SMS with more than one segment

[Herneto]

Fixes

#1136

Description

I was experiencing the issue #1136 where I didn't receive trought HTTP the SMSC's DLR for sms with more than one segment.

It was happening because it always expect the SMSC's DLR for the first pdu what works for sms with one segment.

I just fixed so that SMSC's DLR is expected for the first pdu for sms with one segment and expected for the last pdu for sms with more than one segment.

[farirat]

Hello @Herneto Am running CI tests and let's hope this would pass them.

[farirat]

Hey @Herneto please take a look to the failed tests.

[BlackOrder]

Hi, @Herneto Just rollback https://github.com/Herneto/jasmin/blob/6eb0f0cbcb4e4f3126b54005dc963b6247da6015/jasmin/managers/listeners.py#L393 I think it will pass then