Adding provisionAfterExtensions property for extension sequencing

[sirajudeens]

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The initial PR has been merged into your service PR:
Azure/azure-sdk-for-js#269

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Azure/azure-sdk-for-python#3668

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Can one of the admins verify this patch?

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Azure/azure-sdk-for-node#3925

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[lmazuel]

Hi @sirajudeens
Looks good to me, but could you give me more context about this change? Was it forgotten and always here from the beginning? Is this something you added recently to the two latest API version? etc. Because I'm not able to find it in real payload.

Thanks!

FYI @hyonholee

[lmazuel]

Discussed by Skype with @sirajudeens and in my understanding the node was already there, but not declared in both 2018-06-01 and 2018-10-01