[BUG] core-cli xml --start ignores control network configuration in XML

[dpward]

Describe the bug
When the --start option is used with core-cli xml, the session is started before the control network configuration is parsed from the session XML file. As a result, this configuration is ignored.

If the session is started using core-gui instead, this issue does not occur. This is true whether the session XML file was opened using core-gui as well, or using core-cli xml (without --start).

To Reproduce

1. Download this sample session XML file as session.xml.
2. Start the session using the command: core-cli xml --file session.xml --start
3. Examine the IP configuration for n1 using the command: vcmd -c /tmp/pycore.1/n1 -- ip address

Expected behavior
n1 contains a control network interface, ctrl0.1, with the IPv4 address 172.31.255.1/24 (matching the subnet specified in the XML file).

Actual behavior
n1 does not contain any control network interface.

Desktop

• OS: Multiple (Fedora 39, RHEL 9)
• CORE Version: develop branch (commit a5d0c70)