[Bugfix] session model 添加 vnc 协议 (#2278)

* [Bugfix] session model 添加 vnc 协议

* [Update] 修改表结构

apps/terminal/migrations/0014_auto_20181226_1441.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.1 on 2018-12-26 06:41
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('terminal', '0013_auto_20181123_1113'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='session',
+            name='protocol',
+            field=models.CharField(choices=[('ssh', 'ssh'), ('rdp', 'rdp'), ('vnc', 'vnc')], default='ssh', max_length=8),
+        ),
+    ]

apps/terminal/models.py

@@ -132,7 +132,8 @@ class Session(OrgModelMixin):
     )
     PROTOCOL_CHOICES = (
         ('ssh', 'ssh'),
-        ('rdp', 'rdp')
+        ('rdp', 'rdp'),
+        ('vnc', 'vnc')
     )
 
     id = models.UUIDField(default=uuid.uuid4, primary_key=True)