VirtualNetworkGateways incorrect Swaggers

[lmazuel]

A few bug that forces the CLI to manually override the SDK:

• VirtualNetworkGateways_Generatevpnclientpackage also returns 202, which is not declared in Swagger.

• VirtualNetworkGateways_Generatevpnclientpackage and VirtualNetworkGateways_GenerateVpnProfile needs a final call on Location to get the final result. This requires an annotation in the Swagger, as made before for NetworkWatcher (for example):
  

  azure-rest-api-specs/specification/network/resource-manager/Microsoft.Network/stable/2018-10-01/networkWatcher.json

  Lines 813 to 817 in a1d1c19

  	"operationId": "PacketCaptures_GetStatus",
  	"x-ms-long-running-operation": true,
  	"x-ms-long-running-operation-options": {
  	"final-state-via": "location"
  	},

Please add the same x-ms-long-running-operation-options for both of these operations. And please fix it for all api versions, not just the latest.

[MikhailTryakhov]

Hey @lmazuel please use this table to assign to the service team directly.