slapos_accounting: factorise code

slapos_wechat: use reference sale trade condition

slapos_erp5: check sale trade condition reference

sale trade condition are versionned.

Clarify trade condition title

Prices are defined on Supply Line inside Sale Trade Condition.

Drop prices from Subscription Condition.
Instead, link the Subscription Condition to a Sale Trade Condition.

Apply the Sale Trade Condition on the created Open Sale Order.

Stop duplicating properties from the Subscription Condition to the created Subscription Request.

Payment is managed by the 'payment' category, and not the language.

This allows to remove all '==zh' conditions.
Instead, use custom Sale Trade Condition.

slapos_accounting: rename script for hosting subscription

slapos_accounting: revert failure error

slapos_accounting: force open order line to have an Instance tree and a hosting subscription

slapos_accounting: hosting subscript will host the date info

slapos_accounting: set open order periodicity on the hosting subscription

slapos_accounting: typo

slapos_accounting: hosting subscription will contain the periodicity

slapos_accounting: create hosting subscription

slapos_accounting: fixup start/stop date confusion

slapos_accounting: fixup

slapos_cloud: add hosting subscription workflow

slapos_cloud: stop using Instance Tree as Subscription Item

slapos_accounting: move periodicity view on hosting subscription

slapos_erp5: open order line have 2 items now

slapos_cloud: open order line has 2 items now

slapos_accounting: simulation is expanded from Hosting Subscription

slapos_accounting: validate hosting subscription

slapos_accounting: check all aggregate value

slapos_accounting: revert aggregate tester

slapos_accounting: simulate from hosting subscription

slapos_accounting: constraint is on hosting subscription

slapos_accounting: interaction are on hosting subscription

slapos_subscription_request: periodicity is on hosting subscription

slapos_accounting: open order line has 2 aggregate

slapos_cloud: hosting subscription have a workflow again

slapos_cloud: add hosting subscription template

slapos_accounting: do not create open order if it was not allocated

slapos_accounting: script renamed

slapos_cloud: update HS_view

See merge request nexedi/slapos.core!577

  Since we are changing erp5_site_global_id, update cache is mantatory be called often

See merge request nexedi/slapos.core!576

This could cause slapos request to hang forever while fetching the
json schema of an SR, and in particular it could cause buildout to
hang forever in instance processing when requesting a sub-instance.

See merge request !575

See nexedi/slapos.package!187

   This constraint has no impact and you change your environment (ie.: use another memcache server) fix consistency will just break the system.

   This constaint also contains hardcoded values (which is already the setupped) so it dont make much sense keep this constraint around doing nothing.

   The user should be able to eventually change the cloudooo configuration after the setup it w/o change zope.conf.

   Just give some valid default if nothing is set, there is no reason to make things more complex them this, since the cloudooo_url is already setup on site creation.

  Rely on standard ERP5 implementation is enough

  Some values are set on testing environment, so no need to rely on IsLiveTest

See merge request !573