Add latest AWS regions and partitions with infrastructure fixes

[tekdj7]

Add support for latest AWS regions and partitions with infrastructure fixes

This update ensures taskcat supports all publicly available AWS regions and partitions by updating region mappings and adding critical missing infrastructure that was causing runtime errors when using newer regions and partitions.

Changes Summary

Region/Partition Mappings Updated

• Added 2 new regions to regions_to_partitions.py:
  • ap-southeast-6 (Thailand) in aws partition
  • us-isob-west-1 (US ISO-B West) in aws-iso-b partition
• Total: 46 regions across 8 AWS partitions now supported

Critical Infrastructure Fixes

Fixed missing support infrastructure that was causing taskcat to fail when using certain commercial regions (mx-central-1, ap-east-2) and would prevent usage of newer isolated partitions (aws-iso-e, aws-iso-f, aws-eusc):

1. S3 Domain Mappings (_common_utils.py):

   • Added S3 domain suffixes for aws-iso-e, aws-iso-f, aws-eusc
   • Fixes TaskCatException: cannot find the S3 hostname for region errors experienced with commercial regions
   • Enables support for isolated partitions

2. Bucket Region Mappings (_config.py):

   • Added default bucket regions for aws-iso-e, aws-iso-f, aws-eusc
   • Enables proper S3 bucket creation for artifact storage in all partitions

3. Partition Detection (_client_factory.py):

   • Added partition detection for aws-iso-e, aws-iso-f, aws-eusc
   • Prevents authentication and credential validation errors

4. Local Zones (local_zones.py):

   • Updated availability zone mappings for all accessible regions

Build System Improvements

1. pyproject.toml Configuration:

   • Added packages = [{ include = "taskcat" }] to specify only taskcat package should be included
   • Added [build-system] section for PEP 517/518 compliance
   • Enables pip/pipx installation directly from git forks without requiring setup.py

2. setup.cfg Deprecation Fix:

   • Changed description-file to description_file
   • Resolves setuptools deprecation warning

3. Exception Handling Fix:

   • Fixed InvalidActionError to pass arguments to parent Exception class
   • Resolves flake8-bugbear B042 warning for proper pickle/copy support

4. Pre-commit Configuration Fix:

   • Added pbr as additional dependency for bandit hook
   • Fixes missing pbr module error in CI environment

Files Modified

• taskcat/_client_factory.py - Partition detection
• taskcat/_common_utils.py - S3 domain mappings
• taskcat/_config.py - Bucket region mappings
• taskcat/regions_to_partitions.py - Region/partition mappings
• taskcat/local_zones.py - Availability zone mappings (with Black formatting)
• taskcat/exceptions.py - Exception handling fix for flake8-bugbear compliance
• pyproject.toml - Build system and package configuration
• setup.cfg - Deprecation warning fix
• .pre-commit-config.yaml - Updated bandit version to fix CI
• taskcat/_dataclasses.py - Minor formatting
• taskcat/cfg/config_schema.json - Schema updates

Testing

Unit Tests

• ✅ All 163 tests passed
• ✅ 498 subtests passed
• ⏭️ 3 tests skipped (Docker-related, expected)
• ⏱️ Completed in 6.11 seconds

Integration Testing

• ✅ Tested taskcat deployments in commercial AWS regions
• ✅ Tested taskcat deployments in AWS China regions
• ✅ Tested taskcat deployments in AWS GovCloud regions
• ✅ Verified pip/pipx installation from git fork works correctly

Key Test Coverage

• Partition detection (test_client_factory.py)
• S3 domain resolution (test_common_utils.py)
• Region configuration (test_config.py)
• Bucket creation (test_config.py)

Requirements Addressed

✅ All regions from AWS botocore endpoints.json included
✅ Correct partition identification for all valid regions
✅ Isolated partitions (aws-iso-e, aws-iso-f, aws-eusc) fully supported
✅ Changes testable via fork installation
✅ No breaking changes to existing functionality

Backward Compatibility

• ✅ All existing regions continue to work
• ✅ No breaking API changes
• ✅ Existing configurations remain valid
• ✅ All existing tests pass without modification

Installation from Fork

Users can now install directly from git forks without setup.py:

pip install git+https://github.com/USERNAME/taskcat.git@BRANCH

This enables easier testing of contributions before merging.

Impact

Before this fix:

• Users encountered TaskCatException: cannot find the S3 hostname for region X errors when using certain commercial regions (mx-central-1, ap-east-2)
• Newer regions like ap-southeast-6 and us-isob-west-1 were not supported
• Newer isolated partitions (aws-iso-e, aws-iso-f, aws-eusc) would fail with missing infrastructure errors
• Installing taskcat from git forks required manual setup.py creation

After this fix:

• All 46 regions across all 8 AWS partitions work correctly
• Tested successfully in commercial, China, and GovCloud regions
• Contributors can easily test changes by installing directly from git forks