Fix broken pipeline on cryptography dependency

[tzheleznyak]

What does this PR do?

A bump in the cryptography indirect dependency lead to cascading breaking changes in our direct dependency pyopenssl. This PR fixes this by directing adding cryptography to our requirements.txt and reverting to a previous cryptography version.

New Release of cryptography version 3.4.1 broke our pipeline. Currently We will use the previous version 3.3.1 and and issue will open to investigate it future #184

For more reading about the rust problem in new cryptography version you can read in their github page : pyca/cryptography#5771

Checklists

Change log

• The CHANGELOG has been updated, or
• This PR does not include user-facing changes and doesn't require a CHANGELOG update

Test coverage

• This PR includes new unit and integration tests to go with the code changes, or
• The changes in this PR do not require tests

Documentation

• Docs (e.g. READMEs) were updated in this PR, and/or there is a follow-on issue to update docs, or.
• This PR does not require updating any documentation

[Tovli]

LGTM

[codeclimate]

Code Climate has analyzed commit b55a6d2 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (75% is the threshold).

This pull request will bring the total coverage in the repository to 68.4% (0.0% change).

View more on Code Climate.

[sigalsax]

LGTM