selected region from the available region listing is not being used which results into an error

[Pawan Gupta]

I have multiple regions ( e.g. R1, R2) in my setup and I am providing those via "AVAILABLE_REGIONS" param in `local_settings` file. I have set "DEFAULT_SERVICE_REGIONS" param too with correct endpoints ( e.g. R2).

Now while logging in I select `R2` from the Region dropdown, it still authenticates with `R1` and doesn't route to `R2`, which results into issues.

Just to mention
- I have same identity endpoints in the case of all regions
- If I add one more region e.g. R3, it starts authenticating with that region.

It is the expected behavior?

Below is the package details

Name : openstack-dashboard
Arch : noarch
Epoch : 1
Version : 16.2.1
Release : 1.el7
Size : 56 M
Repo : installed
From repo : centos-openstack-train
Summary : Openstack web user interface reference implementation
URL : http://horizon.openstack.org/
License : ASL 2.0 and BSD
Description : Openstack Dashboard is a web user interface for Openstack. The package
            : provides a reference implementation using the Django Horizon project,
            : mostly consisting of JavaScript and CSS to tie it altogether as a standalone
            : site.