Make propose_translation_update more robust

If there're no translations at all, the locale directory is empty
but we try to add content and that fails like:
 + git add 'ironic_ui/locale/*'
 | fatal: pathspec 'ironic_ui/locale/*' did not match any files

Do not use a wildcard, just add the directory. That way the git command
and will not fail - and the rest of the script works fine.

Change-Id: I2a67b692f437a1bced9507e66cce217765d5d913

jenkins/scripts/propose_translation_update.sh

@@ -99,7 +99,7 @@ function propose_python {
 
     # Some files were changed, add changed files again to git, so that we
     # can run git diff properly.
-    git add $modulename/locale/*
+    git add $modulename/locale/
 }
 
 function propose_horizon {
@@ -116,7 +116,7 @@ function propose_horizon {
     compress_po_files "openstack_dashboard"
 
     # Add all changed files to git
-    git add horizon/locale/* openstack_dashboard/locale/*
+    git add horizon/locale/ openstack_dashboard/locale/
 }
 
 # This function can be used for all django projects
@@ -133,7 +133,7 @@ function propose_django {
     compress_po_files "$modulename"
 
     # Add all changed files to git
-    git add $modulename/locale/*
+    git add $modulename/locale/
 }
 
 # Setup git repository for git review.