Enable ingress integration test #604

Job	Run time
integration-tests / Get runner image / Get runner image	3s
integration-tests / Build and push charm	3m 2s
integration-tests / Build rock / Get rocks	6s
integration-tests / Build image / Get images	3s
integration-tests / Build image / Build image	0s
integration-tests / Build rock / Build rock (jenkins_rock)	4m 26s
integration-tests / Get rocks or Docker images	1s
integration-tests / Integration tests / Integration tests (test_ingress.py)	16m 9s
integration-tests / Integration tests / Integration tests (test_jenkins.py)	20m 10s
integration-tests / Integration tests / Integration tests (test_k8s_agent.py)	17m 41s
integration-tests / Integration tests / Integration tests (test_machine_agent.py)	17m 52s
integration-tests / Integration tests / Integration tests (test_plugins.py)	33m 58s
integration-tests / Integration tests / Integration tests (test_proxy.py)	13m 50s
integration-tests / Integration tests / Integration tests (test_cos.py)	20m 45s
integration-tests / Required Integration Test Status Checks	1s
	2h 28m 7s

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