Unable to handle Swift containers in Horizon due to cookies settings

[Vadym Markov]

Reproduced on several versions since at least Pike to Victoria. Special config needed:

$ grep -i "cookie" local_settings.py

CSRF_COOKIE_SECURE = True
SESSION_COOKIE_SECURE = True
CSRF_COOKIE_HTTPONLY = True
SESSION_COOKIE_HTTPONLY = True

Critical option for reproduce is CSRF_COOKIE_HTTPONLY, turning it off suppresses the issue.

Reproduce:

In Horizon Dashboard:
Project -> Object store -> Containers -> "Create container" fails with the following error:

"Error: Unable to create container"

The following messages are captured in horizon log:

django.request Not Found: /horizon/api/swift/containers/test/metadata/
django.security.csrf Forbidden (CSRF token missing or incorrect.): /horizon/api/swift/containers/test/metadata/

Also deleting of existing container fails with the similar error