Add mocking of some s3 glacier capabilities

[netsettler]

• In dcicutils.command_utils:

  • New decorator require_confirmation

• In dcicutils.common:

  • New variable ALL_S3_STORAGE_CLASSES
  • New variable AVAILABLE_S3_STORAGE_CLASSES
  • New variable S3_GLACIER_CLASSES
  • New type hint S3GlacierClass
  • New type hint S3StorageClass

• In dcicutils.misc_utils:

  • New function INPUT
  • New function future_datetime
  • New decorator managed_property
  • New function map_chunked
  • New function format_in_radix
  • New function parse_in_radix

• In dcicutils.qa_checkers:

  • Fix bug in print statement recognizer

• In dcicutils.qa_utils:

  • Support for Glacier-related operations in MockBotoS3Client:

  • Method copy_object

  • Method delete_object

  • Method list_object_versions

  • Method restore_object

• Load coveralls dependency only dynamically in GA workflow, not in poetry, because it implicates docopt library, which needs 2to3, and would fail.

[netsettler]

This passes a manually-invoke test run.

Test coverage is about the same as the overall test suite, which is probably lower than it should be. Coverage report is here.