Added new topic

[ghost]

This PR attempts to fix the following issues with #7577:

• Multiple commits which should have been squashed to one commit before merging
• Not cherry picked to any of the branches
• Issue with spacing in the topic map file

Trello card: https://trello.com/c/fIJWvdpc/721-document-prevent-pvc-deletion-if-pvc-in-use-by-a-pod

Related PRs:

• [enterprise-3.6] Documenting how to prevent PVC deletion if the PVC i… #7767
• [dedicated-3.6] Documenting how to prevent PVC deletion if the PVC is… #7766

[ghost]

@openshift/team-documentation PTAL.

[ncbaratta]

One tiny comment.

[ghost]

Update rev history in:

/install_config/revhistory_install_config.adoc
/welcome/revhistory_full.adoc

[ghost]

/cherrypick enterprise-3.6

[openshift-cherrypick-robot]

@tmorriso-rh: #7867 failed to apply on top of branch "enterprise-3.6":

error: Failed to merge in the changes.
Using index info to reconstruct a base tree...
M	_topic_map.yml
M	architecture/additional_concepts/storage.adoc
A	install_config/configuring_pvc_protection.adoc
Falling back to patching base and 3-way merge...
CONFLICT (modify/delete): install_config/configuring_pvc_protection.adoc deleted in HEAD and modified in Added new topic. Version Added new topic of install_config/configuring_pvc_protection.adoc left in tree.
Auto-merging architecture/additional_concepts/storage.adoc
Auto-merging _topic_map.yml
CONFLICT (content): Merge conflict in _topic_map.yml
Patch failed at 0001 Added new topic

In response to this:

/cherrypick enterprise-3.6

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ghost]

/cherrypick enterprise-3.9

[openshift-cherrypick-robot]

@tmorriso-rh: #7867 failed to apply on top of branch "enterprise-3.9":

error: Failed to merge in the changes.
Using index info to reconstruct a base tree...
M	_topic_map.yml
M	architecture/additional_concepts/storage.adoc
A	install_config/configuring_pvc_protection.adoc
Falling back to patching base and 3-way merge...
CONFLICT (modify/delete): install_config/configuring_pvc_protection.adoc deleted in HEAD and modified in Added new topic. Version Added new topic of install_config/configuring_pvc_protection.adoc left in tree.
Auto-merging architecture/additional_concepts/storage.adoc
Auto-merging _topic_map.yml
CONFLICT (content): Merge conflict in _topic_map.yml
Patch failed at 0001 Added new topic

In response to this:

/cherrypick enterprise-3.9

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.