feat: add support for host pass in upstream crd

[ikatlinsky]

Type of change:

• New feature provided
• Documentation
• CI/CD or Tests

What this PR does / why we need it:

As per feature request #1661

Pre-submission checklist:

• Did you explain what problem does this PR solve? Or what new features have been added?
• Have you added corresponding test cases?
• Have you modified the corresponding document?
• Is this PR backward compatible?

[ikatlinsky]

Will need some time to investigate why e2e tests are failing, I checked them in the master branch and they are also failing quite randomly (example for external-service.go):

Summarizing 3 Failures:
  [FAIL] suite-features: external services update function:  [It] should be able to create the ApisixUpstream later
  /Users/i.katlinsky/go/pkg/mod/github.com/gavv/httpexpect/v2@v2.15.0/reporter.go:24
  [FAIL] suite-features: external services complex usage:  [It] should be able to use backends and upstreams together
  /Users/i.katlinsky/Documents/sandbox/apisix-ingress-controller/test/e2e/suite-features/external-service.go:407
  [FAIL] suite-features: external services complex usage:  [It] should be able to access multiple external services
  /Users/i.katlinsky/go/pkg/mod/github.com/gavv/httpexpect/v2@v2.15.0/reporter.go:24

@tao12345666333 is it a known issue?

[tao12345666333]

no

[ikatlinsky]

here is an example of the failing build on master branch today

https://github.com/apache/apisix-ingress-controller/actions/runs/5491609801

[tao12345666333]

let me take a look

[tao12345666333]

I will take some time to solve the CI problems. After all test passed, we can merge this one.

[ikatlinsky]

nice, make me know when CI problems will be resolved, so i can run test on my side too

[adam-huganir]

let me take a look

I hate to bug you on this @tao12345666333 , but i was wondering if you had any idea when you might have time to take a look at the tests. This is the last feature we need to have purely crd based deployment and we are very excited it is already in the pipeline to deployment. Thanks for all the work so far on this

[tao12345666333]

Please merge the master branch first. All test cases be fixed. Thanks

[ikatlinsky]

@tao12345666333 merged master into my branch, but at least locally, tests are randomly failing for me with a 504 gateway timeout error. That may not be the case in GitHub actions.

[ikatlinsky]

@tao12345666333 as i see builds on master are still failing https://github.com/apache/apisix-ingress-controller/actions/runs/5767636410

[tao12345666333]

yes. I will fix the test cases in #1918

[tao12345666333]

@ikatlinsky Please merge the latest code from the master branch. We have fixed the CI issues.

[ikatlinsky]

@tao12345666333 done

[tao12345666333]

LGTM