Rest framework (#24)

* Add rest framework for API: First Commit

* modify some shell scripts to make variable references safer; modify some python scripts to reduce the code complexity and cyclomatic complexity of functions.

* Add REST API for some webvirtcloud functions. Instance list/delete/create, compute list/delete/create, storages-network list/retrieve. Add swagger and redoc for API interface

* update requirements

Co-authored-by: herengui <herengui@uniontech.com>

networks/models.py

@@ -1,3 +1,13 @@
 from django.db import models
+from django.utils.translation import gettext_lazy as _
+
 
 # Create your models here.
+class Networks(models.Model):
+    name = models.CharField(_('name'), max_length=20, error_messages={'required': _('No network name has been entered')})
+    status = models.CharField(_('status'), max_length=12)
+    device = models.CharField(_('device'), max_length=100)
+    forward = models.CharField(_('forward'), max_length=24)
+
+    class Meta:
+        managed = False