EZP-30560: Unable to clear Varnish cache on Platform.sh

[SerheyDolgushev]

Question	Answer
JIRA issue	EZP-30560
Type	Bug
Target version	0.9
BC breaks	no
Doc needed	no

Let's say there is eZ Platform site on Platform.sh. Own domain is used to access the admin. So site has following domains:

• https://project.com for front-end
• https://admin.project.com for admin UI

Front-end (https://project.com) is served by Varnish, but admin is not:

// .platform/routes.yaml
https://project.com:
    type: upstream
    upstream: varnish:http
https://admin.project.com:
    type: upstream
    upstream: app:http

When you edit/publish some content in admin UI (https://admin.project.com), it is expected that its Varnish cache will be cleared. But actually, the Varnish cache is not cleared.

TODO:

• Implement feature / fix a bug.
• Implement tests + specs and passing ($ composer test)
• Fix new code according to Coding Standards ($ composer fix-cs).
• Ask for Code Review.

[mnocon]

Reproduced and tested on Platform.sh, looks good to me now - approved!

[lserwatka]

@adamwojs could you merge it up?