Python template should support customized file name for user function

[daisy-ycguo]

Python template only supports "func.py" as the function file name. If I use a different file name, the container will not start correctly and the pod status is "CrashLoopBackOff" with an error: "Readiness probe failed: HTTP probe failed with statuscode: 503".

I don't find a way to set customized file name as user function. If the current template doesn't support that, we should add this feature.

[github-actions[bot]]

This issue is stale because it has been open for 90 days with no activity. It will automatically close after 30 more days of inactivity. Reopen the issue with /reopen. Mark the issue as fresh by adding the comment /remove-lifecycle stale.

[knative-prow-robot]

This issue or pull request is stale because it has been open for 90 days with no activity.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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You can:

• Mark this issue or PR as fresh with /remove-lifecycle rotten
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/lifecycle stale

[zroubalik]

/remove-lifecycle rotten

[github-actions[bot]]

This issue is stale because it has been open for 90 days with no activity. It will automatically close after 30 more days of inactivity. Reopen the issue with /reopen. Mark the issue as fresh by adding the comment /remove-lifecycle stale.

[github-actions[bot]]

This issue is stale because it has been open for 90 days with no activity. It will automatically close after 30 more days of inactivity. Reopen the issue with /reopen. Mark the issue as fresh by adding the comment /remove-lifecycle stale.

[github-actions[bot]]

This issue is stale because it has been open for 90 days with no activity. It will automatically close after 30 more days of inactivity. Reopen the issue with /reopen. Mark the issue as fresh by adding the comment /remove-lifecycle stale.