ipsec: T5981: Strip '@' from migrated peer PKI name

[sarthurdev]

Change Summary

Strip '@' from migrated peer PKI name

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/T5981

Related PR(s)

Component(s) name

ipsec

Proposed changes

• Strip '@' from peer name for migrated PKI nodes as it fails the validator

How to test

Smoketest result

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

[sarthurdev]

@Mergifyio backport sagitta

[mergify]

backport sagitta

✅ Backports have been created

• #2996 ipsec: T5981: Strip '@' from migrated peer PKI name (backport #2993) has been created for branch sagitta