Turn test helper into class and rename

src/main/python/ddadevops/release-mixin/test/helper.py

@@ -0,0 +1,13 @@
+from pathlib import Path
+from infrastructure_api import SystemAPI
+
+
+class Helper():
+    def __init__(self, file_name = 'config.json'):
+        self.TEST_FILE_NAME = file_name
+        self.TEST_FILE_ROOT = Path('test/resources/')
+        self.TEST_FILE_PATH = self.TEST_FILE_ROOT / self.TEST_FILE_NAME        
+
+    def copy_files(self, source: Path, target: Path):
+        api = SystemAPI()
+        api.run_checked('cp', source, target)

src/main/python/ddadevops/release-mixin/test/test_helper.py

@@ -1,10 +0,0 @@
-from pathlib import Path
-from infrastructure_api import SystemAPI
-
-TEST_FILE_NAME = 'config.json'
-TEST_FILE_ROOT = Path('test/resources/')
-TEST_FILE_PATH = TEST_FILE_ROOT / TEST_FILE_NAME
-
-def copy_files(source: Path, target: Path):
-    api = SystemAPI()
-    api.run_checked('cp', source, target)