Draft: chore(ci): putting an explicit 0x in front of SD hexadecimal values

@tien-thinh.nguyen @phine_stefan @arora

so SD values w/ 0x prefix do not work:

• UPF: [config ] [error] Validation of UPF Configuration not successful: Snssai.sd must follow regex specification: ^[A-Fa-f0-9]{6}$UpfInfo.sNssaiUpfInfoList[1].sNssaiUpfInfoList: SNssai is invalid;Snssai.sd must follow regex specification: ^[A-Fa-f0-9]{6}$UpfInfo.sNssaiUpfInfoList[2].sNssaiUpfInfoList: SNssai is invalid;
• SMF: [config ] [error] Validation of SMF Config not successful: Snssai.sd must follow regex specification: ^[A-Fa-f0-9]{6}$
• AMF: crashes without reporting the error.

Pipelines:

• https://jenkins-oai.eurecom.fr/view/CN5G/job/OAI-CN5G-COTS-UE-Test-Dev/146/
• https://jenkins-oai.eurecom.fr/view/CN5G/job/OAI-CN5G-Tutorials-Check-eBPF-Dev/38/
• https://jenkins-oai.eurecom.fr/view/CN5G/job/OAI-CN5G-Tutorials-Check-Dev/121/

No need to fix. We just need to be aware.