fix(amf): PDU-Reject message is not proper for UnsupportedDNN cause s…

[Rajeshs23]

PDU-Reject message is not proper for Unsupported DNN cause sent from AMF

Signed-off-by: Rajeshs23 rajesh.sure@wavelabs.ai

Summary

Issues Handled:
AMF is sending PDU-Request for PDU-Reject Unsupported DNN .AMF should sent PDU-Reject ,
instead of PDU-Request.
Changes are made, unit test case is written for missing_dnn(test_pdu_unknown_dnn_missing_dnn) and test cases are passing .
tested Using UERANSIM and seen amf sending PDU session reject message.

Test Plan

-Tested using UERANSIM
-Unit testing

Additional Information

These are the cases handling. Above the case is for the Cause 27.
corresponding zenhub taskid #12478

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[github-actions]

feg-workflow

    2 files  202 suites   39s ⏱️
370 tests 370 ✔️ 0 💤 0 ❌
384 runs  384 ✔️ 0 💤 0 ❌

Results for commit c3f90a5.

♻️ This comment has been updated with latest results.

[github-actions]

agw-workflow

     78 files     123 suites   7m 54s ⏱️
1 158 tests 1 148 ✔️ 9 💤   1 ❌
1 160 runs  1 140 ✔️ 9 💤 11 ❌

For more details on these failures, see this check.

Results for commit c3f90a5.

♻️ This comment has been updated with latest results.

[ganeshg87]

@Rajeshs23 ,
Please describe the Error scenario and current behavior
and refer below PR which is related to this and map your use case
#10500

[Rajeshs23]

@Rajeshs23 , Please describe the Error scenario and current behavior and refer below PR which is related to this and map your use case #10500

Hi @ganeshg87 comments are addressed. Please verify once.

[pruthvihebbani]

LGTM