[TC-DGSW-2.3] YAML script has to be updated as per the test plan changes

[KishokG]

Description:

• Total test case has been reformated in test plan to automate the script. So script has to be updated for the same(Test plan PR: https://github.com/CHIP-Specifications/chip-test-plans/pull/4262/)

Test plan reference: https://github.com/CHIP-Specifications/chip-test-plans/blob/master/src/cluster/software_diagnostics.adoc#tc-dgsw-2-3-command-received-dut_sever

[cecille]

Obsoleted by #479, this isn't intended for yaml.