File Systems and Bitbucket Server - Documentation

I recommend that we provide some clarification for customers on the file system requirements, recommendations, and what's supported for the home directory.

My TAM customer is running BbS in a VM environment where all storage is NFS. Attached storage is discouraged. They're having I/O issues and some challenging support interactions that I think could be mitigated for other customers with documentation updates.

Supported platform and install instructions on CAC feel like the right spot to me. Let me know what you think.

https://confluence.atlassian.com/bitbucketserver/supported-platforms-776640981.html

https://confluence.atlassian.com/bitbucketserver/install-bitbucket-server-on-linux-868976991.html