OCP 4.6 cluster with cluster wide proxy
CRW deployed: `/crwctl server:deploy --che-operator-image quay.io/crw/crw-2-rhel8-operator:2.6`
Error: Failed to run the workspace: "Server 'theia' in container 'theia-idevvo' not available."

Server logs:
```
2021-01-28 16:08:55,608[ServersChecker]   [DEBUG] [.h.HttpConnectionServerChecker 103]  - Server check for 'theia:https://routechubz2fm-eclipse-che.apps.ci-ln-tq627qb-d5d6b.origin-ci-int-aws.dev.rhcloud.com' request failed with code 407. Response: failed to ready response: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 407 Proxy Authentication Required"
```