feat(ci): split api7ee e2e test by label

[ronething]

In order to speed up the testing process, we can consider distinguishing different labels for the api7ee mode.

ref:

api7-ingress-controller/.github/workflows/apisix-e2e-test.yml

Lines 39 to 41 in 66dc7f6

	cases_subset:
	- apisix.apache.org
	- networking.k8s.io

[ronething]

closed by #243