Data Factory - Global Parameters, bug fix while reading editted or existing global parameter values

[andy-mcgrath]

resourceDataFactoryRead, flattenDataFactoryGlobalParameters set to convert Array and Object types to JSON encoded string

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This is due to the type returned by the API can be the declared type or a string. This change converts the actual global parameter values to a string to compare with the state.

This removes the following error

Error: setting `global_parameter`: global_parameter.0.value: '' expected type 'string', got unconvertible type 'float64'

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Resolves #12301

[andy-mcgrath]

Found with these changes if jsonencode() is used for the vales when the type is Array or Object changes outside of Terraform (without changing the actual values) do not force an update.

I have added a Note to the docs recommending the use of jsonencode and updated the acceptance tests to use jsonencode() for Array and Object type global parameters.

[catriona-m]

Thanks @andy-mcgrath, looks good, just one query about the casing

[catriona-m]

Thanks for this @andy-mcgrath! LGTM now 😄

[github-actions]

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