jp (blog): added --language to common publish argument

sat_frontends/jp/cmd_blog.py

@@ -142,6 +142,11 @@ class BlogPublishCommon(object):
             action="append",
             help=_("tag (category) of your item"),
         )
+        self.parser.add_argument(
+            "-l",
+            "--language",
+            help=_("language of the item (ISO 639 code)"),
+        )
 
         comments_group = self.parser.add_mutually_exclusive_group()
         comments_group.add_argument(
@@ -182,6 +187,8 @@ class BlogPublishCommon(object):
             mb_data['tags'] = self.args.tag
         if self.args.title is not None:
             mb_data["title"] = self.args.title
+        if self.args.language is not None:
+            mb_data["language"] = self.args.language
 
 
 class Set(base.CommandBase, BlogPublishCommon):