keepalived: T4526: keepalived-fifo.py unable to load config

[roedie]

Change Summary

keepalived-fifo.py cannot load the VyOS config because the
script is started before the commit i completely finished.

This change makes sure the script tries to load the config
every 0.5 seconds for 10 times.

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://phabricator.vyos.net/T4526

Component(s) name

keepalived

Proposed changes

How to test

I've tested this by replacing the script with my own version and configuring keepalived.

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]

I'd suggest instead looping on vyos.util.commit_in_progress to ensure the commit in progress is completed.

[roedie]

Ah, I'll create a new pull request then.