remove system exits from datafetcher tests

apps/cli/executables/datafetcher/datafetcher/datafetcher.py

@@ -48,7 +48,11 @@ class DataFetcher:
             raise MissingSettingsException()
         self.args = args
         self.settings = df_capo_settings
-        self.verbose = self.args.verbose
+        try:
+            self.verbose = self.args.verbose
+        except Exception:
+            # we don't care; --verbose will be dropped later in WS-179
+            pass
 
         # required arguments
         self.profile = args.profile
@@ -62,7 +66,14 @@ class DataFetcher:
             raise MissingSettingsException(
                 f"output location {self.output_dir} inaccessible or not found"
             )
-        self._LOG = FlexLogger(self.__class__.__name__, self.output_dir, self.verbose)
+
+        try:
+            self._LOG = FlexLogger(self.__class__.__name__, self.output_dir, self.verbose)
+        except AttributeError as a_err:
+            # verbose is going away, so let's not require it
+            if "no attribute 'verbose'" in str(a_err):
+                self._LOG = FlexLogger(self.__class__.__name__, self.output_dir)
+
         if args.location_file is not None:
             if args.product_locator is not None:
                 raise MissingSettingsException(
@@ -79,7 +90,12 @@ class DataFetcher:
         # optional arguments
         self.is_dry = args.dry_run
         self.force = args.force
-        self.verbose = args.verbose or False
+
+        try:
+            self.verbose = args.verbose or False
+        except AttributeError as a_err:
+            # verbose is going away soon
+            self.verbose = False
 
         self.locations_report = self._get_locations()
         self.servers_report = self.locations_report.servers_report
@@ -100,7 +116,7 @@ class DataFetcher:
         """
 
         fetcher = ParallelFetcher(self.args, self.settings, self._LOG, self.servers_report)
-        return fetcher.run()
+        fetcher.run()
 
     def _get_locations(self):
         capo_settings = get_capo_settings(self.profile)
@@ -112,11 +128,7 @@ def main():
     from the command line.
     """
 
-    try:
-        args = get_arg_parser().parse_args()
-    except (SystemExit, Exception) as exc:
-        # most likely a parameter was omitted
-        raise MissingSettingsException from exc
+    args = get_arg_parser().parse_args()
 
     settings = get_capo_settings(args.profile)
     DataFetcher(args, settings).run()