Built-in role "watcher_admin" doesn't grant write access.

[gecharita]

Describe the feature:

Elasticsearch version (bin/elasticsearch --6.4.3):

Plugins installed: []

JVM version (1.8.0_201):

OS version (Linux Mint 18.3, Cinnamon 3.6.7, 64-bit):

Description of the problem including expected versus actual behavior:

The documentation says that the watcher_admin role:
Grants write access to the .watches index, read access to the watch history and the triggered watches index and allows to execute all watcher actions.

When I get the role, I can see that there is no write access configured:
"watcher_admin" : { "cluster" : [ "manage_watcher" ], "indices" : [ { "names" : [ ".watches", ".triggered_watches", ".watcher-history-*" ], "privileges" : [ "read" ] } ]

[tvernum]

This is a docs issue.
watcher_admin has never granted write access to .watches (despite what the docs say).

See: 71852c7

[elasticmachine]

Pinging @elastic/es-security

[albertzaharovits]

Closed in elastic/stack-docs#190