Step 1: Move Elasticsearch admin options from Integrations to top level
Problem to solve
We want to make Elasticsearch options available from top level Admin area.
So instead of:
Admin area > Integrations > Elasticsearch
we want to have:
Admin area > Elasticsearch
- Add ability to show/hide AWS credentials area via checkbox (frontend)
- Make sure the "start indexing" button works here too (https://gitlab.com/gitlab-org/gitlab-ee/issues/12712)
See epic for details: &1769
The copy on the submit button should be "Save changes" as per today.
The title on the left sidebar, since we don't have multiple indexes yet, should be "GitLab Index".