Read-only file system error while performing minor upgrade.

Issue

During minor upgrade from RHOSP-13z6 to z11, while performing compute node update openstack overcloud update run --nodes Compute it fails with the below facter error
```
Error: Facter: Facter.value uncaught exception: boost::filesystem::create_directories: Read-only file system: \"/opt/puppetlabs/facter/cache/cached_facts\"","
```

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)