perf: 修改表结构迁移，增加rdp terminal

apps/terminal/migrations/0033_auto_20210324_1008.py

+# Generated by Django 3.1 on 2021-03-24 02:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('terminal', '0032_auto_20210302_1853'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='session',
+            name='login_from',
+            field=models.CharField(choices=[('ST', 'SSH Terminal'), ('RT', 'RDP Terminal'), ('WT', 'Web Terminal')], default='ST', max_length=2, verbose_name='Login from'),
+        ),
+    ]