[BUG] Unable to add cluster:monitor/shards permission to a role

[jgough]

What is the bug?
In Dashboards it not possible to add the cluster:monitor/shards permission to a role

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Edit a role
2. Under Cluster permissions try to add the permission cluster:monitor/shards

Note that an error appears as above: cluster:monitor/shards doesn't match any options

What is the expected behavior?
Able to add the permission

What is your host/environment?

• OS: docker
• Version 2.13
• Plugins: Security Plugin + Custom CSS styling

Additional info
I could not find this permission documented , but came across it when I kept getting a permissions error. I can manually add the permission through the _plugins/_security/api/roles/ API endpoint but not through Dashboards.

Discussion here: https://forum.opensearch.org/t/no-permissions-for-cluster-monitor-shards/24081

[cwperks]

This will be included in the dropdown in 3.0.0: #2223