Admin subcloud "Storage Overview" OSDs output is incorrect

[Wendy Mitchell]

Horizon admin subcloud "Storage Overview" displays OSDs but unexpectedly reports for
2 hosts even though there is just one controller in the subcloud

Severity
--------
Standard

Steps to Reproduce
------------------

1. Log into Horizon - system admin
2. From system controller select menu option to Switch to subclouds
3. Select Host Details (of eg. subcloud2). A single controller is listed.
4. Navigate to Platform - Storage Overview for subcloud2

Expected Behavior
------------------
Expect only the osds for the subcloud host should be listed. In this case there was only a single controller

ie. The osd lists for subcloud2 is as following in the cli

SYSTEM: dc-subcloud2

controller-0:~$ ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 0.87189 root storage-tier
-2 0.87189 chassis group-0
-3 0.87189 host controller-0
 0 ssd 0.87189 osd.0 up 1.00000 1.00000

Actual Behavior
----------------
Lists more than one osd ie. osd.0 appears for controller-0 which exists but unexpectedly the Storage Overview also displays osd.1 for controller-1 which does not exist on subcloud2.

eg.
Storage Overview
Storage Cluster UUID
92b7a49c-2dd8-4bcc-9394-efb4e6840b18
Storage Cluster Health Status
HEALTH_OK
Storage Cluster Health Details
HEALTH_OK
Storage Usage
18251 MiB used, 1767 GiB available, 1785 GiB total
Storage I/O
0 kiB/s write, 0 operations/second write
Monitors
Host Rank
controller 0
OSDs
Host Name Status
controller-0 osd.0 up
controller-1 osd.1 up

Reproducibility
---------------
yes
(Note: A browser refresh does not fix this)

System Configuration
----------------
system controller
2 subclouds, each have a single controller

Branch/Pull Time/Commit
-----------------------
2020-05-02_20-00-00

Last Pass
---------
This problem does not show up in Horizon where it is not on a subcloud

Timestamp/Logs
--------------

Test Activity
------------
Horizon DC

[Ghada Khalil (gkhalil)]

low priority - gui display issue