vifib_web_ui_test was removed by mistake.

Check that bang is called on parameter change for state, software release,
instnace xml and sla xml.

Cover basic shared cases.

Additionally abort transaction on end of test and generate random XMLs.

Computer doesn't need to access Hosting Subscription, as SlapTool only access
Partitions and Instances.

Instances related to the HS are already assignor on it.

Check that destroyed state creates no new object (test_request_destroyed_state).
Check that simple case of requesting two different instances works correctly
(test_request_two_different).
Check that changes to tree structure are applied correctly for indexed tree
(test_request_tree_change_indexed) and that they are forbidden in other cases
(test_request_tree_change_not_indexed and test_request_tree_change_same_transaction,
where the former is a low severity bug, so expectedFailure).
Check that state is correctly propagated (test_request_started_stopped_destroyed).

 BT5 list was sorted accord the dependency tree of vifib_erp5, this list
 will be automatically resolved in future.

 List was obtained by the output of:
  context.portal_templates.resolveBusinessTemplateListDependency(["vifib_erp5"])

Prove that trying to request with same title will fail (test_request_sameTitle).

Prove that shared parameter is correctly supported and system complains in case
if its type is incorrect (test_request_shared_True and test_request_shared_unsupported).

Prove that indexation will not result in damaged system (test_request_unindexed).

Prove that in case of normal request with same coordinates same instance is returned
(test_request_double).

Prove that in case if there is damage in system (same tree contains one then
more instance with same title) no more requests will be allowed (test_request_duplicated).

Jump directly into proper inital state of the tree.

Simply move from vifib_erp5 to slapos_erp5.

Software Release document is created on demand.

variation_category_list is redefined in this property sheet.

This bt5 is not needed as fiber request is not installed neither.