Replace placement request path

Remove '//' in the placement request path.

Closes-Bug: #2089223
Change-Id: I2646ac3f82c7e1ab01faf1626bd8aa8046d66d0d

openstack_dashboard/api/placement.py

@@ -55,8 +55,11 @@ def make_adapter(request):
 
 def _get_json(request, path):
     adapter = make_adapter(request)
-    uri = base.url_for(request, 'placement') + path
-    response, body = adapter.get(uri)
+
+    base_uri = base.url_for(request, 'placement')
+    new_uri = base_uri.rstrip('/') + '/' + path.lstrip('/')
+
+    response, body = adapter.get(new_uri)
     return response.json()