[release-v1.15] Add Konflux configurations #985

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PipelineRun: <a href="https://console.redhat.com/application-pipeline/ns/ocp-serverless-tenant/pipelinerun/kn-eventing-test-wathola-forwarder-115-on-pull-request-5wccc" rel="nofollow">kn-eventing-test-wathola-forwarder-115-on-pull-request-5wccc

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Red Hat Konflux/kn-eventing-test-wathola-forwarder-115-on-pull-request has successfully validated your commit.

Status	Duration	Name
✅ Succeeded	13 minutes	init
✅ Succeeded	12 minutes	clone-repository
✅ Succeeded	15 minutes	prefetch-dependencies
✅ Succeeded	2 minutes	build-images
✅ Succeeded	14 minutes	build-image-index
✅ Succeeded	59 seconds	sast-shell-check
✅ Succeeded	49 seconds	push-dockerfile
✅ Succeeded	1 minute	clamav-scan
✅ Succeeded	16 seconds	apply-tags
✅ Succeeded	1 minute	sast-snyk-check
✅ Succeeded	15 seconds	sast-unicode-check
✅ Succeeded	11 minutes	build-source-image
✅ Succeeded	11 minutes	deprecated-base-image-check
✅ Succeeded	11 minutes	clair-scan
✅ Succeeded	11 minutes	ecosystem-cert-preflight-checks
✅ Succeeded	10 minutes	rpms-signature-scan
✅ Succeeded	4 minutes	show-sbom