Distributed Cloud: Server groups panel appears in sidebar when region is RegionOne.

[Gao Zexu]

Brief Description
-----------------
RegionOne of Central Region has no Compute service installed, but server groups panel appears with error.

Severity
--------
Low

Steps to Reproduce
------------------
Login as admin user on System Controller
Navigate to Project - Compute - Server Groups

Expected Behavior
------------------
No Compute group in sidebar.

Actual Behavior
----------------
Server groups panel of Compute group appears.

Reproducibility
---------------
Yes

System Configuration
--------------------
Distributed Cloud

Branch/Pull Time/Commit
-----------------------
master

Timestamp/Logs
--------------
N/A

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/615033

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/615033
Committed: https://git.openstack.org/cgit/openstack/stx-gui/commit/?id=ef157ff4ff9720082791a695cc543b3e9c1eccc3
Submitter: Zuul
Branch: master

commit ef157ff4ff9720082791a695cc543b3e9c1eccc3
Author: gaozx <email address hidden>
Date: Fri Nov 2 14:47:06 2018 +0800

    Fix for Distributed Cloud server groups panel

    Disable server groups panel in sidebar when region is RegionOne.

    Change-Id: I2e7ebfee0c7ccc40b8bb028d5eb9ea27fd1aa368
    Closes-Bug: 1801224