TC-CNET-4.1: Automate

[khodya]

Needs to be re-written to properly conform to the test plan. Step 7 is entirely incorrect. Suggest using python to check through the list.

remove PICS (all attributes used in this test are mandatory)
remove factory reset - not necessary
checks that the cluster and feature are present can be rolled into the test decorator (has_feature, has_cluster)
current test: https://github.com/project-chip/connectedhomeip/blob/master/src/app/tests/suites/certification/Test_TC_CNET_4_1.yaml

test plan: https://github.com/CHIP-Specifications/chip-test-plans/blob/master/src/cluster/network_commissioning.adoc