Raise NotFound error when retrieved by not uuid

On identity-projects page:
  Retrieve project list filtered by id which is not uuid format like '%',
there will throw an error message on top-right page.
And the same for identity-users page.

It is reasonable that return an empty list without error prompt.

Change-Id: I65aec86f4d894a9789eef6fc093ed95a95c46d9f
Closes-Bug: #1800600

openstack_dashboard/api/keystone.py

@@ -20,6 +20,8 @@
 import collections
 import logging
 
+from oslo_utils import uuidutils
+
 from django.conf import settings
 from django.utils.translation import ugettext_lazy as _
 import six
@@ -347,6 +349,9 @@ def is_domain_admin(request):
 # tenant commands.
 @profiler.trace
 def tenant_get(request, project, admin=True):
+    if not uuidutils.is_uuid_like(project):
+        raise keystone_exceptions.NotFound()
+
     manager = VERSIONS.get_project_manager(request, admin=admin)
     try:
         return manager.get(project)
@@ -466,6 +471,9 @@ def user_delete(request, user_id):
 
 @profiler.trace
 def user_get(request, user_id, admin=True):
+    if not uuidutils.is_uuid_like(user_id):
+        raise keystone_exceptions.NotFound()
+
     user = keystoneclient(request, admin=admin).users.get(user_id)
     return VERSIONS.upgrade_v2_user(user)