plugin related issues

[Junjie Gao]

The following issues were confronted when implement E2E plugin testing:

• plugin version validating logic is not correct (regex expression does not work) fixed by #237
• signatureAlgorithm returned by generate-envelope plugin command is not verified.
• annotation returned by generate-envelope plugin command is not processed

[github-actions]

This issue is stale because it has been opened for 60 days with no activity. Remove stale label or comment. Otherwise, it will be closed in 30 days.

[github-actions]

Issue closed due to no activity in the past 30 days.