Fix tests for Drupal 8.5 (#183)

.travis.yml

composer.json

docker-compose.yml

modules/ui_patterns_ds/src/FieldTemplateProcessor.php

...es/ui_patterns_ds/src/FieldTemplateProcessorInterface.php

...les/ui_patterns_ds/src/Plugin/DsFieldTemplate/Pattern.php

modules/ui_patterns_ds/ui_patterns_ds.module

...ugin/field_group/FieldGroupFormatter/PatternFormatter.php

...es/ui_patterns_field_group/ui_patterns_field_group.module

...s/ui_patterns_layouts/src/Plugin/Layout/PatternLayout.php

...erns_library/src/Controller/PatternsLibraryController.php

...ui_patterns_library/src/Plugin/Deriver/LibraryDeriver.php

..._library/src/Plugin/UiPatterns/Pattern/LibraryPattern.php

modules/ui_patterns_views/src/Plugin/views/row/Pattern.php

modules/ui_patterns_views/ui_patterns_views.module

phpunit.xml.dist

runner.yml.dist

src/Annotation/UiPatternsSource.php

src/Definition/PatternDefinition.php

src/Definition/PatternDefinitionField.php