Clarify what are the OpenSAF data replication needs

[jfournier]

As of today, OpenSAF documentation suggests to use DRBD for replication. But it doesn't prevent OpenSAF users to use another replication mechanism.

A single directory used to be replicated (/repl_opensaf), but its content wasn't LSB standard (log and data path)

As of today all the logs and data is under /var/lib/opensaf. Per LSB req, logs should be structured under /var/log/opensaf. But having the files in multiple standard locations might breaks current replication scheme for some users.

The OpenSAF documentation should not be talking about any replication mechanism as it can be confusing for some users. The OpenSAF documentation must clearly mention:

• What should be replicated
• What are the impact if replicated/not replicated
• What is optional for replication and impacts
• Explain what /var/lib/opensaf, /var/log/opensaf contains (to help users manage their own replication mechanisms)

[marioa]

Retargeted for OpenSAF TLC discussion