CASMNET-2273 - CMN missing from mgmt access control list

[spillerc-hpe]

Summary and Scope

Add the CMN to the mgmt access list to permit SSH, HTTPS, and SNMP over the CMN.

• I have added new tests to cover the new code
• If adding a new file, I have updated pyinstaller.py
• I have added entries in CHANGELOG.md for the changes in this PR

Issues and Related PRs

• Resolves: [CASMNET-2273](https://jira-pro.it.hpe.com:8443/browse/CASMNET-2273)

Testing

Generated new configuration using data from hela, verified the CMN is now present in the access list.

$ diff orig/sw-spine-001.cfg new/sw-spine-001.cfg
7c7
< # CANU version: 1.9.6.dev59+gd3b6bc3
---
> # CANU version: 1.9.6.dev59+gd3b6bc3.d20250106
30,39c30,43
<     60 comment ALLOW SNMP FROM HMN METALLB SUBNET
<     70 permit udp 10.94.100.0/255.255.255.0 any eq snmp
<     80 permit udp 10.94.100.0/255.255.255.0 any eq snmp-trap
<     90 comment BLOCK SSH, HTTPS, AND SNMP FROM EVERYWHERE ELSE
<     100 deny tcp any any eq ssh
<     110 deny tcp any any eq https
<     120 deny udp any any eq snmp
<     130 deny udp any any eq snmp-trap
<     140 comment ALLOW ANYTHING ELSE
<     150 permit any any any
---
>     60 permit tcp 10.102.66.0/255.255.255.128 any eq ssh
>     70 permit tcp 10.102.66.0/255.255.255.128 any eq https
>     80 permit udp 10.102.66.0/255.255.255.128 any eq snmp
>     90 permit udp 10.102.66.0/255.255.255.128 any eq snmp-trap
>     100 comment ALLOW SNMP FROM HMN METALLB SUBNET
>     110 permit udp 10.94.100.0/255.255.255.0 any eq snmp
>     120 permit udp 10.94.100.0/255.255.255.0 any eq snmp-trap
>     130 comment BLOCK SSH, HTTPS, AND SNMP FROM EVERYWHERE ELSE
>     140 deny tcp any any eq ssh
>     150 deny tcp any any eq https
>     160 deny udp any any eq snmp
>     170 deny udp any any eq snmp-trap
>     180 comment ALLOW ANYTHING ELSE
>     190 permit any any any