…ch-project#2792)

Signed-off-by: zhichao-aws <zhichaog@amazon.com>
(cherry picked from commit a580dfc)

Co-authored-by: zhichao-aws <zhichaog@amazon.com>

…-project#2797)

Signed-off-by: Yaliang Wu <ylwu@amazon.com>
(cherry picked from commit 1bb2ef1)

Co-authored-by: Yaliang Wu <ylwu@amazon.com>

Permissions for REST admin user

Added granular permissions for all REST API actions in OpenSearch to be individually assigned.

Permissions are:
    - 'restapi:admin/actiongroups' - allow full access to actiongroups
    - 'restapi:admin/allowlist' - allow full access to allowlist
    - 'restapi:admin/internalusers'- allow full access to internalusers
    - 'restapi:admin/nodesdn'- allow full access to nodesdn
    - 'restapi:admin/roles' - allow full access to roles
    - 'restapi:admin/rolesmapping' - allow full access to roles mappings
    - 'restapi:admin/ssl/certs/info' - allow full access to certs info
    - 'restapi:admin/ssl/certs/reload' - allow full access to certs reload
    - 'restapi:admin/tenants' - allow full access to tenants

Adds tests for these permissions.

Signed-off-by: Andrey Pleskach <ples@aiven.io>
(cherry picked from commit d676716)

Signed-off-by: Darshit Chanpura <dchanp@amazon.com>

Signed-off-by: Darshit Chanpura <dchanp@amazon.com>

Signed-off-by: Darshit Chanpura <dchanp@amazon.com>

Remove unused import

Signed-off-by: Darshit Chanpura <dchanp@amazon.com>