Added roles for ltr read and full access

[rithin-pullela-aws]

Description

[Describe what this change achieves]

• Category (Enhancement)
• Why these changes are required?
  To allow users to easily specify ltr roles
• What is the old behavior before changes and new behavior after changes?

Issues Resolved

[List any issues this PR will resolve]

Is this a backport? If so, please add backport PR # and/or commits #, and remove backport-failed label from the original PR.

Do these changes introduce new permission(s) to be displayed in the static dropdown on the front-end? If so, please open a draft PR in the security dashboards plugin and link the draft PR here

Testing

[Please provide details of testing done: unit testing, integration testing and manual testing]

Check List

• New functionality includes testing
• New functionality has been documented
• New Roles/Permissions have a corresponding security dashboards plugin PR
• API changes companion pull request created
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.47%. Comparing base (ec99e7e) to head (1d67fd3).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5067      +/-   ##
==========================================
- Coverage   71.51%   71.47%   -0.04%     
==========================================
  Files         336      336              
  Lines       22625    22625              
  Branches     3601     3601              
==========================================
- Hits        16180    16171       -9     
- Misses       4643     4654      +11     
+ Partials     1802     1800       -2     

see 3 files with indirect coverage changes