support yaml fix

[marcelldls]

https://github.com/epics-containers/ibek-support/blob/8d18d58c19aa4443aaf7e9df7e81eb4e141b9774/ADAravis/ADAravis.ibek.support.yaml#L139-L142

[marcelldls]

@gilesknap Is this the feature that currently prevents multiple AutoADGenICam.pvi.device.yaml?

[gilesknap]

Yes we just need to jinja templating of this field like we do for database.file