[ML] File Data Viz: indicate the required privileges on UI and our docs for the "import" feature

[wwang500]

Kibana Version: 7.4.0

Step to reproduce:

1. Create a user with only kibana_user and machine_learning_user roles
2. Login as the user
3. navigate to Machine Learning -> Data Visualizer
4. select a csv file to import

Observed:
the "Import" button is greyed out.

snapshot:

Expected behavior:
Either the "Import" button should be enabled, or we should indicate the required privileges on UI and our docs

For now, the user needs to have a custom role with manage_ingest_pipelines, monitor and manage_index_templates for cluster privileges, and manage and index privileges for target index.

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[peteharverson]

I suggest if the user doesn't have the required permissions to import data, then we add a tooltip to the disabled button saying something like 'You do not have the privileges required to import data' , and possibly then list the exact privileges that are required:

Current checks in the code are for:

cluster:monitor/nodes/info
cluster:admin/ingest/pipeline/put

and if index name is known, the following privileges on the index (probably not applicable for this step of the wizard):

'indices:data/write/bulk',
'indices:data/write/index',
 'indices:admin/create',

Would also be useful to add a page to the docs listing the prerequisites.

[peteharverson]

Note in testing this, I found that I didn't need to have manage_index_templates. I used a custom role with manage_ingest_pipelines and monitor for cluster privileges, and manage and index privileges for target index (plus read to be able to view the ingested data once the import is complete).

[droberts195]

Note in testing this, I found that I didn't need to have manage_index_templates

That makes sense to me. As far as I'm aware the file import feature doesn't create an index template.