[release-v1.16] Fix detection of hostname resolution failure #1318

Namespace: <a href="https://detailurl.setting.custom-console-url-namespace.is.not.configured" rel="nofollow">ocp-serverless-tenant
PipelineRun: <a href="https://konflux-ui.apps.kflux-prd-rh02.0fk9.p1.openshiftapps.com/ns/ocp-serverless-tenant/pipelinerun/kn-plugin-func-func-util-116-on-pull-request-szbl7" rel="nofollow">kn-plugin-func-func-util-116-on-pull-request-szbl7

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Status	Duration	Name
✅ Succeeded	6 seconds	init
✅ Succeeded	9 seconds	clone-repository
✅ Succeeded	2 minutes	prefetch-dependencies
✅ Succeeded	2 minutes	build-images
✅ Succeeded	13 seconds	build-image-index
✅ Succeeded	1 minute	clair-scan
✅ Succeeded	11 seconds	rpms-signature-scan
✅ Succeeded	42 seconds	sast-snyk-check
✅ Succeeded	32 seconds	ecosystem-cert-preflight-checks
✅ Succeeded	47 seconds	clamav-scan
✅ Succeeded	9 seconds	apply-tags
✅ Succeeded	12 seconds	push-dockerfile
✅ Succeeded	9 seconds	deprecated-base-image-check
✅ Succeeded	29 seconds	sast-unicode-check
✅ Succeeded	1 minute	build-source-image
✅ Succeeded	25 seconds	sast-shell-check
✅ Succeeded	8 seconds	show-sbom