Fix when upgrading ha module
Added replicating state when saving changes after replication

This helps to not commit suicide when restarting ha module due to network changes
Get conf from peer node when joining

Instead of replicating our maybe empty configuration.

From the user's point of view, it is what is logical.
preserve permissions with tar
Merge branch 'master' into ejhernandez/ha-repl-fixes
added method doc
added replication status to nodes table
Merge branch 'ejhernandez/ha-repl-fixes' into jacalvo/repl-status

Conflicts:
	main/ha/src/EBox/HA.pm
retry replication button
added missing assignation
Merge pull request #988 from Zentyal/jacalvo/repl-status

Jacalvo/repl status