(DOCSP-39674-v70) Backporting. (#245)

[JIRA](https://jira.mongodb.org/browse/DOCSP-39674)
[Build
Log](https://workerpool-boxgs.mongodbstitch.com/pages/job.html?collName=queue&jobId=6661efcfebce19f31493a979)
[Staging: Query a Backup
Snapshot](https://preview-mongodblmkerbeymdb.gatsbyjs.io/ops-manager/DOCSP-39674/tutorial/query-backup/#query-backup--use-tunnel-to-connect-)
[Staging: Restore a Single Database or
Collection](https://preview-mongodblmkerbeymdb.gatsbyjs.io/ops-manager/DOCSP-39674/tutorial/restore-single-database/#open-a-backup-tunnel-to-the-queryable-snapshot)

Backport of #244

Author: lmkerbey-mdb

source/includes/snapshot-mount-time.rst

@@ -0,0 +1,8 @@
+.. note::
+
+   Wait for the Queryable Snapshot to mount before you
+   continue. Snapshot mount time depends on the size of the
+   snapshot. Verify the snapshot is mounted by navigating to
+   :guilabel:`Continuous Backup` and selecting the :guilabel:`Restore
+   History` tab. When the snapshot is mounted, the :guilabel:`Status`
+   column reports the date and time of the mount operation.

source/includes/steps-query-backup-manual.yaml

@@ -25,6 +25,8 @@ content: |
 
    #. Download the |certauth| PEM file.
 
+      .. include:: /includes/snapshot-mount-time.rst
+
    #. Use {+mongosh+} or a MongoDB driver to connect
       to the queryable backup host. To connect, you must specify the
       hostname and port, the |tls| option, and the X.509 certificates.

source/includes/steps-query-backup-tunnel.yaml

@@ -24,6 +24,8 @@ content: |
 
    #. Uncompress the downloaded file.
 
+      .. include:: /includes/snapshot-mount-time.rst
+
    #. Open a terminal or command prompt and go to the uncompressed
       <tunnel> directory. Run the executable to start the tunnel. 
       

source/includes/steps-restore-db-from-queryable-backup.yaml

@@ -24,6 +24,8 @@ content: |
 
    #. Uncompress the downloaded file.
 
+      .. include:: /includes/snapshot-mount-time.rst
+
    #. Open a terminal or command prompt and go to the uncompressed
       <tunnel> directory. Run the executable to start the tunnel.