* Feature: Support --filters opton in secretsmanager:ListSecrets
* Implement some of the secret filters
* Check listSecrets filters combine with an implicit AND operator
* Test all filter and multi-value filter and multi-word filter
* Fix matcher behavior, restructure code
* Implement remaining listSecrets filter cases
* Linter fixes
* Use contains-in-any-order assertions for test_list_secrets
* Linter fix again
* Attempt Python 2 fix for assert_items_equal
* Remove docstrings from test_list_secrets tests as they make the test reports weird
* Test and handle listSecrets filter with no values
* initial work
- adding put_secret_value and list_secret_versions
* Added support for versions in all functions except rotate_secret
* more work
- refactor rotate_secret method
- now, adds a new version of the secret and points default version id to it
- updated implementation coverage readme
- element in list check to fix unit test
- fixed linting errors
- added tests, fixed exception, failing tests still
- secrets_manager/test_server fails when running whole suite,
but not when running that individual test file
* fixed failing test_get_secret_value
* Removed test.py. Fixed condition statement.
* fixed default stages + adding AWSPREVIOUS
* remove old AWSPREVIOUS stages
