Data Collector Data field string fix

[TajiHarrisMicrosoft]

Description

Previously, custom blob storage collections on data collector were passing in a string of a reference to the data collector object. This has the update parameters for the data object in the collection return as a data object and then passed in the string reference to the registered data object to the back end call.

https://dev.azure.com/msdata/Vienna/_workitems/edit/2872030

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[azure-sdk]

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APIView has identified API level changes in this PR and created following API reviews.

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