App Config SDK/Provider Pylint Updates

[mrm9084]

Description

Part 1 of updates for #44708, a second PR needs to be created to update the sanitation steps.

Note: Only samples/tests have been modified as part of this change.

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[Copilot]

Pull request overview

This PR addresses pylint version 4.0.4 compliance issues for the azure-appconfiguration and azure-appconfiguration-provider packages as part of issue #44708. The changes focus on fixing linting warnings without altering functionality.

Changes:

• Reordered imports to follow consistent pattern: stdlib, third-party, local modules, azure packages
• Added pylint disable comments for classes with many public methods
• Refactored test code to use setup methods instead of inline context managers
• Converted instance methods to static methods where appropriate
• Removed unused imports and parameters
• Fixed missing return statement in sample utility function

Reviewed changes

Copilot reviewed 55 out of 56 changed files in this pull request and generated 14 comments.

Show a summary per file

File	Description
test_query_param_policy.py	Reordered imports, removed unused return statement, attempted to split long lines with multi-line strings (introduces bugs)
test_consistency.py	Reordered imports
test_azure_appconfiguration_client_async.py	Reordered imports, added pylint disable, refactored context manager usage, attempted error message line splitting (introduces bugs), added staticmethod decorator
test_azure_appconfiguration_client_aad_async.py	Reordered imports, added pylint disable, attempted error message line splitting (introduces bugs), split long comment
test_azure_appconfiguration_client_aad.py	Reordered imports, added pylint disable, attempted error message line splitting (introduces bugs)
test_azure_appconfiguration_client.py	Reordered imports, added pylint disable, removed unused imports, refactored context manager usage, attempted error message line splitting (introduces bugs), fixed SecretReferenceConfigurationSetting test, added staticmethod decorator
test_audience_policy.py	Reordered imports
test_audience_error_handling_live_async.py	Reordered imports, removed unused imports
test_audience_error_handling_live.py	Reordered imports, removed unused imports
preparers.py (azure-appconfiguration)	Reordered imports, attempted connection string line splitting (introduces bugs)
perfstress_tests/set.py	Removed unused import
perfstress_tests/get.py	Removed unused import
asynctestcase.py	Reordered imports
snapshot_sample_async.py	Reordered imports, split long docstring
snapshot_sample.py	Reordered imports, split long docstring
hello_world_sample_entra_id_and_bleu.py	Split long docstring, changed environment variable name (introduces documentation inconsistency)
hello_world_entra_id_sample.py	Changed environment variable name (introduces documentation inconsistency)
conditional_operation_sample.py	Fixed early return pattern
testcase.py (azure-appconfiguration-provider)	Reordered imports
test_tag_filters.py	Reordered imports, removed unused import
test_snapshots.py	Removed unused import
test_request_tracing_context.py	Added pylint disable comment (missing space)
test_provider_refresh.py	Reordered imports
test_provider_feature_management.py	Reordered imports
test_provider_aad.py	Reordered imports
test_provider.py	Reordered imports, removed unused parameter
test_json.py	Minor whitespace fix in test string
test_discovery.py	Reordered imports
test_configuration_client_manager_load_balance.py	Reordered imports
test_configuration_client_manager.py	Reordered imports
key_vault/test_secret_refresh.py	Reordered imports
key_vault/test_secret_provider.py	Reordered imports
aio/test_configuration_async_client_manager_load_balance.py	Reordered imports
aio/test_configuration_async_client_manager.py	Reordered imports, split long patch decorator paths
aio/test_async_snapshots.py	Removed unused import
aio/test_async_provider_refresh.py	Reordered imports
aio/test_async_provider_feature_management.py	Reordered imports
aio/test_async_provider_aad.py	Reordered imports
aio/test_async_provider.py	Reordered imports, split long comment
aio/test_async_discovery.py	Reordered imports, removed unused import
aio/key_vault/test_async_secret_refresh.py	Reordered imports, removed unused import
aio/key_vault/test_async_secret_provider.py	Reordered imports
samples/snapshot_sample.py (provider)	Removed unused import
samples/sample_utilities.py	Added missing return statement
samples/refresh_sample_feature_flags.py	Reordered imports, changed unused parameter to underscore, split long comment
samples/refresh_sample.py	Reordered imports, changed unused parameter to underscore, split long comment
samples/key_vault_reference_sample.py	Reordered imports
samples/key_vault_reference_customized_clients_sample.py	Reordered imports
samples/connection_string_sample.py	Reordered imports
samples/async_snapshot_sample.py	Reordered imports
samples/async_key_vault_reference_sample.py	Reordered imports
samples/async_key_vault_reference_provided_clients_sample.py	Reordered imports
samples/async_connection_string_sample.py	Reordered imports
samples/async_aad_sample.py	Reordered imports
samples/aad_sample.py	Reordered imports