Security - Role Mappings UI (#53620) (#54534)

* Initial role mappings UI

* apply design edits

* address PR feedback

* fix type cast for number field

* Update x-pack/legacy/plugins/security/public/views/management/role_mappings/edit_role_mapping/components/mapping_info_panel/mapping_info_panel.tsx

Co-Authored-By: Joe Portner <5295965+jportner@users.noreply.github.com>

* Cleanup FTR configuration, and handle role mapping 404 errors properly

* align naming of role mappings feature check

* Apply suggestions from code review

Co-Authored-By: Brandon Kobel <brandon.kobel@gmail.com>

* add missing test assertions

* inlining feature check logic

* switch to using snapshot

* use href instead of onClick

* adding delete unit test

* consolidate href building

* unify page load error handling

* simplify initial loading state

* documenting unconditional catch blocks

* use nodes.info instead of transport.request

* Apply suggestions from code review

Co-Authored-By: Brandon Kobel <brandon.kobel@gmail.com>

* move model out of LP into NP

* convert except_field_rule to except_any_rule

* docs, take 1

* update gif

Co-authored-by: Joe Portner <5295965+jportner@users.noreply.github.com>
Co-authored-by: Brandon Kobel <brandon.kobel@gmail.com>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

Co-authored-by: Joe Portner <5295965+jportner@users.noreply.github.com>
Co-authored-by: Brandon Kobel <brandon.kobel@gmail.com>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

x-pack/test/functional/config.js

@@ -158,6 +158,10 @@ export default async function({ readConfigFile }) {
       ml: {
         pathname: '/app/ml',
       },
+      roleMappings: {
+        pathname: '/app/kibana',
+        hash: '/management/security/role_mappings',
+      },
       rollupJob: {
         pathname: '/app/kibana',
         hash: '/management/elasticsearch/rollup_jobs/',