Add JWT claim based access validation policy tests

[Akila94]

This PR contains the integration tests for the JWT claim-based access validation policy.

Related implementation PRs:

• Add jwt claim based access validator policy templates #13361
• Resource access validation feature carbon-apimgt#12247

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 24.31%. Comparing base (4f7f071) to head (f8c3fa4).
Report is 5 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #13414      +/-   ##
============================================
+ Coverage     20.24%   24.31%   +4.07%     
- Complexity     1030     1242     +212     
============================================
  Files           254      254              
  Lines         11489    11489              
  Branches       1200     1200              
============================================
+ Hits           2326     2794     +468     
+ Misses         9134     8668     -466     
+ Partials         29       27       -2     

Flag	Coverage Δ
integration_tests	24.31% <ø> (+4.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.