add 2 storage linked service type: AzureBlobStorage, AzureTableStorage and support aad auth for AzureBlobStorage

[ligengatms]

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[ligengatms]

I'm still waiting for backend service Production deploy, please wait for my signal before merge into master, thx

[hovsepm]

@ligengatms please ping me directly via IM or email when this PR will be ready to merge.

[hovsepm]

      "type": "object",

all these fields are of type string according to the description - why are then not modeled as "type": "string"?

---

Refers to: specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json:117 in 9f225ae. [](commit_id = 9f225ae, deletion_comment = False)

[ligengatms]

@hovsepm thank you for the help, I'll send you by mail when we're ready to merged. And for your comments, connectionString as the description said it may be string, secureString, depends on customer input, that's why we set it to object; and for sasUri it's also secret, so it's type is SecretBase which is defined in datafactory.json; for encryptedCredential, you are right, i'm changing it to string, thanks for pointing it out.

[jhendrixMSFT]

@AutorestCI regenerate azure-sdk-for-go