Distributed Cloud: config_management on subcloud rejecting MGMT CIDR

[Maria Yousaf]

Brief Description
-----------------
Distributed cloud - config_management script on subcloud rejecting MGMT CIDR value

Severity
--------
Major

Steps to Reproduce
------------------
- Distributed cloud has a config_management procedure to bring up the subcloud management network to establish connectivity between the subcloud and the system controller
- This procedure was attempted using the CIDR value under the MGMT field in the generated subcloudX.config
- The CIDR was rejected with a message 'cannot use network address' or similar wording
- Workaround is to provision management manually
- Here is what is in the subcloudX.config:
[REGION2_PXEBOOT_NETWORK]
PXEBOOT_CIDR = 192.168.202.0/24
[MGMT_NETWORK]
VLAN = 127
CIDR = fd01:2::0/64
<snip>

Expected Behavior
------------------
CIDR can be entered

Actual Behavior
----------------
CIDR rejected

Reproducibility
---------------
100%

System Configuration
--------------------
Distributed Cloud - IPv6

Branch/Pull Time/Commit
-----------------------
stx.10.2018 as of 2018-10-15_01-52-00

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

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/611692

[Ghada Khalil (gkhalil)]

Targeting stx.2019.03 - minor clarification required in the script in question

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/611692
Committed: https://git.openstack.org/cgit/openstack/stx-config/commit/?id=a95f3d79edc7d3c47c6a6d730e6f2b9382cd7d4c
Submitter: Zuul
Branch: master

commit a95f3d79edc7d3c47c6a6d730e6f2b9382cd7d4c
Author: Kevin Smith <email address hidden>
Date: Thu Oct 18 14:27:12 2018 -0400

    Make config_management input instructions clearer

    The config_management tool is expecting an IP address in CIDR
    notation. Change the text output to the user to reflect this.

    Change-Id: I316ea1d16c7662f7778765b9f5b9c1f770bd0d69
    Closes-Bug: 1798613
    Signed-off-by: Kevin Smith <email address hidden>