fix(tests): no more "log.SetLogger(...) was never called..." log entry during e2e tests

[programmer04]

What this PR does / why we need it:

During e2e tests the below is logged

test_webhook.go:26: initializing Kubernetes API clients
test_webhook.go:26: intializing manager client
[controller-runtime] log.SetLogger(...) was never called; logs will not be displayed.
Detected at:
    >  goroutine 55 [running]:
    >  runtime/debug.Stack()
    >       /opt/homebrew/Cellar/go/1.22.1/libexec/src/runtime/debug/stack.go:24 +0x6c
    >  sigs.k8s.io/controller-runtime/pkg/log.eventuallyFulfillRoot()
    >       /Users/[email protected]/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/log/log.go:60 +0xc8
    >  sigs.k8s.io/controller-runtime/pkg/log.(*delegatingLogSink).WithName(0xc000a00440, {0x10288d0dc, 0x14})
    >       /Users/[email protected]/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/log/deleg.go:147 +0x38
    >  github.com/go-logr/logr.Logger.WithName({{0x1037bdbd0, 0xc000a00440}, 0x0}, {0x10288d0dc, 0x14})
    >       /Users/[email protected]/go/pkg/mod/github.com/go-logr/[email protected]/logr.go:345 +0x50
    >  sigs.k8s.io/controller-runtime/pkg/client.newClient(0xc000b60008, {0x0, 0x0, {0x0, 0x0}, 0x0, {0x0, 0x0}, 0x0})
    >       /Users/[email protected]/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/client/client.go:129 +0x10c
    >  sigs.k8s.io/controller-runtime/pkg/client.New(0xc000b60008, {0x0, 0x0, {0x0, 0x0}, 0x0, {0x0, 0x0}, 0x0})
    >       /Users/[email protected]/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/client/client.go:110 +0x90
    >  github.com/kong/gateway-operator/test/e2e.CreateEnvironment(0xc000c2fa00, {0x1037b7f00, 0xc000974960}, {0x0, 0x0, 0x10453f5a8?})
    >       /Users/[email protected]/Documents/work/gateway-operator/test/e2e/environment.go:173 +0x10f4
    >  github.com/kong/gateway-operator/test/e2e.TestDataPlaneValidatingWebhook(0xc000c2fa00)
    >       /Users/[email protected]/Documents/work/gateway-operator/test/e2e/test_webhook.go:26 +0x78
    >  testing.tRunner(0xc000c2fa00, 0x10377f7e8)
    >       /opt/homebrew/Cellar/go/1.22.1/libexec/src/testing/testing.go:1689 +0x184
    >  created by testing.(*T).Run in goroutine 52
    >       /opt/homebrew/Cellar/go/1.22.1/libexec/src/testing/testing.go:1742 +0x5e8
test_webhook.go:26: deploying Gateway APIs CRDs from github.com/kubernetes-sigs/gateway-api/config/crd/experimental?ref=v1.0.0
test_webhook.go:26: deploying KIC CRDs from https://github.com/Kong/kubernetes-ingress-controller/config/crd?ref=v3.1.2
test_webhook.go:26: creating system namespaces and serviceaccounts

this PR gets rid of it.