Move OADP configuring sections one level up

Signed-off-by: Shruti Deshpande <shdeshpa@redhat.com>

Author: shdeshpa07

_topic_maps/_topic_map.yml

@@ -3669,29 +3669,58 @@ Topics:
       File: oadp-usecase-enable-ca-cert
     - Name: Using the legacy-aws Velero plugin
       File: oadp-usecase-legacy-aws-plugin
-  - Name: Installing and configuring OADP
+    - Name: Backing up workloads on OADP with ROSA STS
+      File: oadp-rosa-backup-restore
+  - Name: Installing OADP
     Dir: installing
     Topics:
     - Name: About installing OADP
       File: about-installing-oadp
     - Name: Installing the OADP Operator
       File: oadp-installing-operator
+  - Name: Configuring OADP with AWS S3 compatible storage
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with AWS S3 compatible storage
       File: installing-oadp-aws
+  - Name: Configuring OADP with IBM Cloud
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with IBM Cloud
       File: installing-oadp-ibm-cloud
+  - Name: Configuring OADP with Azure
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with Azure
       File: installing-oadp-azure
+  - Name: Configuring OADP with GCP
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with GCP
       File: installing-oadp-gcp
+  - Name: Configuring OADP with MCG
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with MCG
       File: installing-oadp-mcg
+  - Name: Configuring OADP with ODF
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with ODF
       File: installing-oadp-ocs
+  - Name: Configuring OADP with OpenShift Virtualization
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with OpenShift Virtualization
       File: installing-oadp-kubevirt
+  - Name: Configuring OADP with multiple backup storage locations
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with multiple backup storage locations
       File: configuring-oadp-multiple-bsl
+  - Name: Configuring OADP with multiple Volume Snapshot Locations
+    Dir: installing
+    Topics:
     - Name: Configuring OADP with multiple Volume Snapshot Locations
       File: configuring-oadp-multiple-vsl
   - Name: Uninstalling OADP