This patch changes formatting and the DRBD shared secret details, and
adds master daemon socket details to the security doc.

Reviewed-by: imsnah

Reviewed-by: imsnah

It may need further updates, but here's a start.

Reviewed-by: ultrotter

Since we have removed support for local and remote raid1, update the man
pages and guides to reflect the new situation.

Reviewed-by: imsnah

Reviewed-by: schreiberal

Reviewed-by: imsnah