Totally remove password from create_instance

Never pass password as an 'osparam' to Ganeti. Always use the vmapi,
even for VMs created with server-create management command.

snf-cyclades-app/synnefo/api/management/commands/server-create.py

@@ -162,7 +162,7 @@ class Command(BaseCommand):
 
         try:
             # Create the instance in Backend
-            jobID = create_instance(vm, nic, flavor, image, password)
+            jobID = create_instance(vm, nic, flavor, image)
 
             vm.backendjobid = jobID
             vm.save()

snf-cyclades-app/synnefo/logic/backend.py

@@ -349,7 +349,7 @@ def create_instance_diagnostic(vm, message, source, level="DEBUG", etime=None,
                                                    details=details)
 
 
-def create_instance(vm, public_nic, flavor, image, password=None):
+def create_instance(vm, public_nic, flavor, image):
     """`image` is a dictionary which should contain the keys:
             'backend_id', 'format' and 'metadata'
 
@@ -401,10 +401,6 @@ def create_instance(vm, public_nic, flavor, image, password=None):
         'img_id': image['backend_id'],
         'img_format': image['format']}
 
-    if password:
-        # Only for admin created VMs !!
-        kw['osparams']['img_passwd'] = password
-
     # Defined in settings.GANETI_CREATEINSTANCE_KWARGS
     # kw['hvparams'] = dict(serial_console=False)