Fixed the problem when a service is referenced from one ingress resou… #6
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…rce more than once
For such Ingress, the controller would generate an NGINX conf with 3 upstream with the same name, which is not allowed by NGINX.
The pull request fixes the issue. The generated NGINX conf file will have 2 upstreams with unique names: default-example-ingress-s1.example.com-s1 and default-example-ingress-same-s1.example.com-s1 -- one upstream for a given service per host