Conformance test for HTTPRoute weights

[dprotaso]

What type of PR is this? /kind cleanup /kind test /area conformance

What this PR does / why we need it:

There currently isn't a conformance test for weighted routing. This is a core feature for HTTPRoute.

Which issue(s) this PR fixes: N/A

Does this PR introduce a user-facing change?:

NONE

[dprotaso]

rebased

[dprotaso]

adding approvers and reviewers for input here on approach - see the discussion here - https://github.com/kubernetes-sigs/gateway-api/pull/2814#discussion_r1503473000

/assign @arkodg @mlavacca @sunjayBhatia /cc @LiorLieberman @michaelbeaumont @Xunzhuo

[dprotaso]

Conformance reviewers/approvers - Can I get review please @arkodg @LiorLieberman @michaelbeaumont @mlavacca @sunjayBhatia @Xunzhuo

[dprotaso]

There's a go.mod change so this requires top level maintainers to approve

/unassign @sunjayBhatia @arkodg @mlavacca /assign @robscott @shaneutt @youngnick

[robscott]

/lgtm /approve

[dprotaso]

error seems unrelated to PR

level=error msg="Running error: context loading failed: no go files to analyze" [0;31mTest FAILED: hack/../hack/verify-golint.sh

/retest

[dprotaso]

Need to merge/rebase main

[dprotaso]

rebased and ran go mod tidy

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: arkodg, dprotaso, mlavacca, robscott

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• ~~OWNERS~~ [robscott]

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