git_config - fixed bug with scope file (#2125)

* fixed bug

- scope file was not working
- added test to guarantee that behaviour
- marked integration test as destructive, because it overwrites ~/.gitconfig

* added changelog fragment

* Update tests/integration/targets/git_config/tasks/setup_no_value.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update tests/integration/targets/git_config/tasks/get_set_state_present_file.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update tests/integration/targets/git_config/tasks/get_set_state_present_file.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update tests/integration/targets/git_config/aliases

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update changelogs/fragments/2125-git-config-scope-file.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/modules/source_control/git_config.py

@@ -216,14 +216,13 @@ def main():
     args = [git_path, "config", "--includes"]
     if params['list_all']:
         args.append('-l')
-    if scope:
-        args.append("--" + scope)
-    if name:
-        args.append(name)
-
     if scope == 'file':
         args.append('-f')
         args.append(params['file'])
+    elif scope:
+        args.append("--" + scope)
+    if name:
+        args.append(name)
 
     if scope == 'local':
         dir = params['repo']