CASMTRIAGE-7296 new add documentation for the ceph-upgrade-tool.py

[leliasen-hpe]

Description

The ceph-upgrade-tool.py is used as part of the storage node upgrade. This PR removes documentation for the cubs_tool.py and adds documentation for the ceph-upgrade-tool.py.

Checklist

• If I added any command snippets, the steps they belong to follow the prompt conventions (see example).
• If I added a new directory, I also updated .github/CODEOWNERS with the corresponding team in Cray-HPE.
• My commits or Pull-Request Title contain my JIRA information, or I do not have a JIRA.

[leliasen-hpe]

/backport release/1.5

[github-actions]

Backporting into branch release/1.5 was successful. New PR: #5411

[leliasen-hpe]

/backport release/1.4

[github-actions]

Error occured while backporting into branch release/1.4.

Error

git -c user.name="Lindsay Eliasen" -c user.email="lindsay.eliasen@hpe.com" cherry-pick b72dcd113c39b234f982bc8c23e99eec57a7757f -x
Auto-merging operations/README.md
Auto-merging operations/utility_storage/Utility_Storage.md
CONFLICT (content): Merge conflict in operations/utility_storage/Utility_Storage.md
error: could not apply b72dcd11... CASMTRIAGE-7296-new add documentation for the ceph-upgrade-tool.py

hint: After resolving the conflicts, mark them with

hint: "git add/rm ", then run

hint: "git cherry-pick --continue".

hint: You can instead skip this commit with "git cherry-pick --skip".

hint: To abort and get back to the state before "git cherry-pick",

hint: run "git cherry-pick --abort".

hint: Disable this message with "git config advice.mergeConflict false"

[leliasen-hpe]

I manually backported this to release/1.4:#5412 and release/1.3: #5413.

[dborman-hpe]

LGTM