Revert "Refactor ext-proc Main with Server Package Add Hermetic Test with k8s API Client for EPP"

[ahg-g]

Reverts #222

This consistently caused a failure when trying to send a reqeust:

ahg@ahg-cloudtop:~/gateway$ curl -i ${IP}:${PORT}/v1/completions -H 'Content-Type: application/json' -d '{
"model": "tweet-summary",
"prompt": "Write as if you were a critic: San Francisco",
"max_tokens": 100,            
"temperature": 0                   
}'               
curl: (28) Failed to connect to 34.133.148.169 port 8081 after 19481 ms: Couldn't connect to server

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[ahg-g]

/hold