* Remove PyCrypto from setup.py and packaging script
* Remove mention of pycrpto from installation docs
* Remove PyCrypto from vault
* Remove pycryto constraint and unit test requirement
* Remove PyCrypto tests from unit tests
* Add docs and fix warning message
* Remove section about cryptography library in Ansible Vault docs
* Fix location of unit test requirements.
* Preserve ansible-test unit test requirements.
* Remove redundant unit test requirements.
* Fix location of network test requirements.
* Preserve ansible-test network test requirements.
* Remove redundant network test requirements.
* Add missing ordereddict requirements.
* Load collection requirements correctly.
* Add changelog fragment.