app: fix use of new configuration key

gwdatafind_server/app.py

@@ -32,10 +32,10 @@ class GWDataFindApp(Flask):
         super().__init__(import_name, *args, **kwargs)
 
         config = ConfigObj(configpath)
-        self.config.update(
-            # use      new key                    or old key
-            config.get("GWDataFindServer", config["LDRDataFindServer"]),
-        )
+        try:
+            self.config.update(config["GWDataFindServer"])  # new key
+        except KeyError:
+            self.config.update(config["LDRDataFindServer"])  # old key
 
         # log to file
         if self.config.get("logfile"):

tests/gwdatafind-server.ini

-[LDRDataFindServer]
+[GWDataFindServer]
 # frame cache file
 framecachefile = tests/cache.dat
 framecachetimeout = 10