[feat] set default branch for jobs to be applied to

[S-hayeon]

Changes

enable to set default branch for all jobs within integrationConfig default branch will be overridden if job.When is specified

Submitter Checklist

• [X] Docs included if needed
• [ ] Tests included if needed
• [X] Follows the good commit messages standard

[tmax-cloud-bot]

[APPROVE ALERT]

User eddy-kor-92 approved this pull request!