RANGER-4897: Extended the test coverage for XUserRest & RoleRest apis endpoints

[krishnamuttevi]

Extends the Ranger functional test framework with a generic, suite-driven run-tests.sh runner and adds Pytest coverage for XUserREST and RoleREST Admin APIs.

Refactored run-tests.sh into a reusable orchestration script that any functional test suite can plug into:

Suite registry — ALL_TEST_SUITES lists available Pytest folders; new suites are added by dropping a directory and updating the array

Suite classification — separates test-only suites (rolerest, xuserrest, servicerest) from Docker-backed suites (hdfs, kms) so archives and compose files are started only when needed

Interactive and CLI modes — prompts for DB type and suites, or accepts

./run-tests.sh [db-type] [suite...]

Conditional Docker setup — builds Ranger, brings up the base Admin stack (admin, DB, ZK, Solr, usersync, tagsync, KMS), and optionally adds HDFS/Hadoop compose when requested

Environment controls — CLEAN_CONTAINERS=1 for full clean build; RUN_TESTS=0 for infrastructure-only runs

Generic test execution — loops over requested suites, runs pytest on each existing directory, and generates report_<suite>.html per suite

Pytest suite for Ranger Admin XUserRest APIs:

test_user.py — user CRUD, role assignments, external users
test_secure_user.py — secure user CRUD and RBAC
test_groups.py — group and group-user management
test_permission.py — module permissions
test_ugsync.py — user/group sync (LDAP, UNIX, FILE)
test_utility_fun.py — lookup, auth sessions, userstore download
Includes shared conftest.py, utility/utils.py, and readme.md.

Pytest suite for Ranger Admin RoleRest APIs:

test_role_management.py — role CRUD, lookup, service-admin access paths
test_role_utility_fun.py — export/import, secure download, membership, grant/revoke
Includes role-specific utilities, fixtures, and readme.md.

Other changes

pytest.ini — adds xuserrest, rolerest, and HTTP method markers
functional-tests/readme.md — documents suites, env vars, usage, and reports