Entitlment, invoice, order, product, and validation feature update

[ghost]

Description

Through this pull request the following changes are being made

• Devices
  • Addressed issue with the device update operation
• Entitlements
  • Added the ability to obtain the expiration date for the entitlement (if applicable)
  • Added the AlternateId property to the reference order object
  • Added the following properties to the Entitlement model
  • FulfillmentState
  • ExpiryDate
• Invoices
  • Added the following properties to the OneTimeInvoiceLineItem model
  • AlternateId
  • ChargeEndDate
  • ChargeStartDate
  • PublisherId
  • PublisherName
  • SubscriptionDescription
  • SubscriptionId
  • TermAndBillingCycle
  • UnitType
  • Removed Azure Data Market billing provider type and models because this is no longer supported
• Orders
  • Added the ability to get the activation link for an order line item
  • Added the ability to include pricing details in the order information returned when requesting a list of customer orders
• Products
  • Added the following properties to the Availability model
  • IsPurchasable
  • IsRenewable
  • Terms
  • Added the following properties to the Product model
  • IsMicrosoftProduct
  • PublisherName
  • Removed the SKU download operations
• Qualifications
  • Added the ability to update the customer qualification used for Government Community Cloud.
• Validations
  • Added the ability to request validation codes used to create Government Community Cloud customers