This commit implements the inclusion of the subcloud networks in the
firewall ingress rules. The networks are obtained from the routes
table.
Test plan:
Setup: Distributed Cloud with AIO-DX as system controller.
[PASS] Add subcloud, check that the corresponding network is present in
the system controller's firewall.
[PASS] Remove subcloud, check that the corresponding network is no
longer present in the system controller's firewall.
Story: 2010591
Task: 48139
Depends-on: https://review.opendev.org/c/starlingx/stx-puppet/+/885303
Change-Id: Ia83c26c88914413026953fcef97af55fe65bd058
Signed-off-by: Lucas Ratusznei Fonseca <lucas.ratuszneifonseca@windriver.com>