T6214: T6213: change constraint <alpha-numeric-hyphen-underscore-dot.xml.i> (backport #3281)

[mergify]

Change Summary

Change constraint alpha-numeric-hyphen-underscore-dot.xml.i in order to not allow string starting with dot character; use such constraint in firewall group definitions.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T6214
• https://vyos.dev/T6213

Related PR(s)

Component(s) name

firewall

Proposed changes

How to test

vyos@Latest# compare commands 

set firewall group address-group -X_.Y address '198.51.100.3'
set firewall group address-group A.B_C-D address '198.51.100.1'
set firewall group address-group _aB-C. address '198.51.100.2'

[edit]
vyos@Latest# commit
[edit]
vyos@Latest# sudo nft list table ip vyos_filter | grep "set A"
        set A_-X_.Y {
        set A_A.B_C-D {
        set A__aB-C. {
[edit]
vyos@Latest# set firewall group port-group .PG01 port 22

  
  
  Name of firewall group con only contain alpha-numeric letters, hyphen, underscores and dot
  Value validation failed
  Set failed

[edit]
vyos@Latest# 

Smoketest result

Smoketest run during this change:

• test_firewall.py
• test_interfaces_pppoe.py
• test_service_pppoe-server.py
• test_protocols_bgp.py
• test_service_dhcp-server.py
• test_service_dhcpv6-server.py
• test_pki.py

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

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This is an automatic backport of pull request #3281 done by [Mergify](https://mergify.com).