Add pytz dependency to test requirements

[rajivmucheli]

required for audit-middleware

[notque]

LGTM

[joker-at-work]

I think requirements are installed in tests, too, so this means duplication.

If barbican doesn't need this, it shouldn't be part of barbican's requirements.txt. You could use our internal custom-requirements.txt but really, it should be part of audit-middleware's requirements.txt. afaik, lower-constraints.txt are not evaluated to get a list of packages to install when finding dependencies, so audit-middleware needs to properly define their dependencies. lower-constraints.txt are afaik also only evaluated when explicitly passed as contraint file to pip - which is not how we install audit-middleware in our images.

[rajivmucheli]

I think requirements are installed in tests, too, so this means duplication.

If barbican doesn't need this, it shouldn't be part of barbican's requirements.txt. You could use our internal custom-requirements.txt but really, it should be part of audit-middleware's requirements.txt. afaik, lower-constraints.txt are not evaluated to get a list of packages to install when finding dependencies, so audit-middleware needs to properly define their dependencies. lower-constraints.txt are afaik also only evaluated when explicitly passed as contraint file to pip - which is not how we install audit-middleware in our images.

Hi @notque, could you implement the above ? i will close this PR then.

[notque]

Thanks @joker-at-work - replaced with sapcc/openstack-audit-middleware#129