T861: Fix kernel suffix for package build by actions

[sever-sever]

Change Summary

Fix kernel suffix for package build by actions (without Jenkins)
The bug was introduced in d235b31

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)

Component(s) name

linux-kernel

Proposed changes

How to test

Before the fix -6.6.52-_6.6.52-1:

vyos_bld@41a0a31c2db3:/vyos/work/tmp/vyos-build/scripts/package-build/linux-kernel$ 
ls -la | grep deb
-rw-r--r--  1 vyos_bld vyos_bld   8975124 Oct  1 12:22 linux-headers-6.6.52-_6.6.52-1_amd64.deb
-rw-r--r--  1 vyos_bld vyos_bld  29464376 Oct  1 12:22 linux-image-6.6.52-_6.6.52-1_amd64.deb
-rw-r--r--  1 vyos_bld vyos_bld   1318772 Oct  1 12:22 linux-libc-dev_6.6.52-1_amd64.deb

After the fix we have correct name -6.6.52-vyos_6.6.52-1:

vyos_bld@41a0a31c2db3:/vyos/work/tmp/vyos-build/scripts/package-build/linux-kernel$ ls -la | grep .deb
-rw-r--r--  1 vyos_bld vyos_bld   8975048 Oct  1 12:42 linux-headers-6.6.52-vyos_6.6.52-1_amd64.deb
-rw-r--r--  1 vyos_bld vyos_bld  29455308 Oct  1 12:42 linux-image-6.6.52-vyos_6.6.52-1_amd64.deb
-rw-r--r--  1 vyos_bld vyos_bld   1318844 Oct  1 12:42 linux-libc-dev_6.6.52-1_amd64.deb
vyos_bld@41a0a31c2db3:/vyos/work/tmp/vyos-build/scripts/package-build/linux-kernel$ 

Checklist:

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

[github-actions]

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