Bug fix to generate config
What's Changed
* fix dump lstchain config by vuillaut in https://github.com/cta-observatory/lstmcpipe/pull/318
* v0.8.4 codemeta by vuillaut in https://github.com/cta-observatory/lstmcpipe/pull/319
**Full Changelog**: https://github.com/cta-observatory/lstmcpipe/compare/v0.8.3...v0.8.4