refactor gatherer tests: drop mocks and use builder instead.
refactor executioner tests to use builder.
refactor post upgrade tests to use builder.
refactor test_command_create to use ftw.builder's package builder.
refactor test_command_touch to use ftw.builder's package builder.
refactor test_command_utils to use ftw.builder's package builder.
let UpgradeTestCase set a default testing layer.
refactor test_directory_meta_directive to use ftw.builder's package builder.
refactor test_directory_scanner to use ftw.builder's package builder.
refactor test_manage_view to use builders and testbrowser.
extend upgrade step builder and add tests.
refactor test_upgrade_step to longer depend on static test profiles.
refactor test_directory_recorder extend new UpgradeTestCase class.
switch test_workflow to new testing layer.
refactor test_helpers to use new testing layer and WorkflowTestCase base class.
refactor test_placefulworkflow to use new testing layer.
refactor WorkflowTestCase to have default testing layer and set roles.
refactor test_directory_upgrade_steps to use new builders and testing layer.
refactor test_meta_import_profile to use builders and new testing layer.
rename new testing layer.