tests: remove apm_user role (#14876)

* remove apm_user role in tests

* test: add read privilege on traces-apm.sampled* to apm_server role

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Co-authored-by: kruskal <[email protected]>

Author: endorama

testing/docker/elasticsearch/roles.yml

@@ -3,7 +3,7 @@ apm_server:
   indices:
     - names: ['apm-*', 'traces-apm*', 'logs-apm*', 'metrics-apm*']
       privileges: ['write','create_index','manage','manage_ilm']
-    - names: ['.apm-source-map']
+    - names: ['.apm-source-map', 'traces-apm.sampled*']
       privileges: ['read']
   applications:
     - application: 'apm'

testing/docker/elasticsearch/users_roles

@@ -1,6 +1,5 @@
 apm_server:apm_server_user
 apm_system:apm_server_user
-apm_user:apm_server_user,apm_user_ro
 beats:beats_user
 beats_system:beats_user,filebeat_user,heartbeat_user,metricbeat_user
 filebeat:filebeat_user