Corrected failing sonar build - Posix path.

test/test_analysis/test_QuenchHeaterAnalysis.py

@@ -19,7 +19,7 @@ class TestQuenchHeaterAnalysis(unittest.TestCase):
 
         pms = PmDbSignal(system=system, className=className, source=source, signalName=signalName, eventTime=eventTime)
         path = Path(os.path.dirname(__file__))
-        filePath = os.path.join(path.parent, 'resources/{}_{}_{}.json'.format(eventTime, source, signalName))
+        filePath = os.path.join(str(path.parent), 'resources/{}_{}_{}.json'.format(eventTime, source, signalName))
         with open(filePath) as json_file:
             response = json.load(json_file)
             content = response['content'][0]