script/build-integration-branch: Add usage

[sebastian-philipp]

Also add a --no-date to make it possible to re-use an existing branch name

Signed-off-by: Sebastian Wagner sebastian.wagner@suse.com

Checklist

• References tracker ticket
• Updates documentation if necessary
• Includes tests for new functionality or reproducer for bug

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[liewegas]

LGTM. Note that ptl-tool.py does more than this, though, so we probably don't need to get too carried away.

[sebastian-philipp]

Main reason was to prevent anyone else from needing to read the source in order to use this tool

[tchaikov]

$ ./src/script/build-integration-branch wip-kefu-testing
{'--help': False,
 '--no-date': False,
 '<label>': 'wip-kefu-testing'}
Traceback (most recent call last):
  File "./src/script/build-integration-branch", line 44, in <module>
    branch = label if arguments['--no-date'] else label + prefix
NameError: name 'prefix' is not defined

fixed by #32303