We can't currently check that a modal is shown or an action within the modal is visible within our QA tests. This means that if we have an important modal we want to validate against (a delete modal for instance), we can't do so. We should add four different QA selectors to `GlModal` which will allow us to check each actionable part of the modal within QA tests: | Action | Selector | | ------ | ------ | | Modal container | `qa-gl-modal` | | Modal cancel button | `qa-gl-modal-cancel-btn` | | Modal primary button | `qa-gl-modal-primary-btn` | | Modal secondary button | `qa-gl-modal-secondary-btn` |