[DOCS] Adds read_ccr and manage_ccr privileges

Author: lcawl

docs/en/stack/security/authorization/privileges.asciidoc

@@ -29,6 +29,12 @@ This includes snapshotting, updating settings, and rerouting. It also includes
 obtaining snapshot and restore status. This privilege does not include the 
 ability to manage security.
 
+`manage_ccr`::
+All {ccr} operations related to managing follower indices and auto-follow 
+patterns. It also includes the authority to grant the privileges necessary to 
+manage follower indices and auto-follow patterns. This privilege is necessary 
+only on clusters that contain follower indices. 
+
 `manage_index_templates`::
 All operations on index templates.
 
@@ -62,6 +68,12 @@ who created or updated them.
 
 --
 
+`read_ccr`::
+All read only {ccr} operations, such as getting information about indices and 
+metadata for leader indices in the cluster. It also includes the authority to 
+check whether users have the appropriate privileges to follow leader indices. 
+This privilege is necessary only on clusters that contain leader indices. 
+
 `transport_client`::
 All privileges necessary for a transport client to connect.  Required by the remote
 cluster to enable <<cross-cluster-configuring,Cross Cluster Search>>.
@@ -82,6 +94,11 @@ All `monitor` privileges plus index administration (aliases, analyze, cache clea
 close, delete, exists, flush, mapping, open, force merge, refresh, settings,
 search shards, templates, validate).
 
+`manage_follow_index`::
+All actions that are required to manage the lifecycle of a follower index, which
+includes creating a follower index, closing it, and converting it to a regular 
+index. This privilege is necessary only on clusters that contain follower indices. 
+
 `view_index_metadata`::
 Read-only access to index metadata (aliases, aliases exists, get index, exists, field mappings,
 mappings, search shards, type exists, validate, warmers, settings). This