MGMT-19100: Allow install to the existing root filesystem #7197

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Namespace: assisted-installer-tenant
PipelineRun: assisted-service-rhel9-mce-downstream-main-on-pull-requestt6j5n

Status	Duration	Name
✅ Succeeded	6 seconds	init
✅ Succeeded	29 seconds	clone-repository
✅ Succeeded	11 seconds	prefetch-dependencies
✅ Succeeded	8 minutes	build-images
✅ Succeeded	24 seconds	build-image-index
✅ Succeeded	38 seconds	push-dockerfile
✅ Succeeded	32 seconds	rpms-signature-scan
✅ Succeeded	34 seconds	sast-snyk-check
✅ Succeeded	38 seconds	clair-scan
✅ Succeeded	2 minutes	clamav-scan
✅ Succeeded	11 seconds	apply-tags
✅ Succeeded	53 seconds	ecosystem-cert-preflight-checks
✅ Succeeded	9 seconds	deprecated-base-image-check
✅ Succeeded	7 seconds	show-sbom