CNV-16554: Reverting feature to Tech Preview

Author: Bob Gaydos

virt/backup_restore/virt-backup-restore-overview.adoc

@@ -6,6 +6,9 @@ include::_attributes/common-attributes.adoc[]
 
 toc::[]
 
+:FeatureName: OADP for {VirtProductName}
+include::snippets/technology-preview.adoc[]
+
 As a cluster administrator, you back up and restore {VirtProductName} virtual machines (VMs) by using the OpenShift API for Data Protection (OADP).
 // Non-admin user [https://issues.redhat.com/browse/OADP-203] is targeted for OADP 1.1.