Add examples of 201 response to AppServicePlans_CreateOrUpdate.

Update UserAssignedIdentities spec in Web

Microsoft.Web recently added support for UserAssigned managed service identities (in preview), but the swagger spec is incorrect for the identity payload as it follows the old construct of sending an array of identityIds as opposed to the updated spec which instead sends a dictionary object called userAssignedIdentities. 

Spec + history outlined here:
http://sharepoint/sites/AzureUX/Sparta/_layouts/15/WopiFrame2.aspx?sourcedoc=%7b633632B4-02E4-4DE2-92A9-EDCAF9BE73D4%7d&file=ARM%2BMSI.docx&action=default 

Our swagger contains identityids[] because of previous work to future support UserAssigned identities, but never released the feature in that state, rather we opted to wait for the new spec to be supported and then integrated with that on our end. 

Our MSI implementation reflects Microsoft.Compute's spec for user assigned.

https://github.com/Azure/azure-rest-api-specs/blob/78e1feab142c605839aa3cec23442ca26b8ef04d/specification/compute/resource-manager/Microsoft.Compute/stable/2018-06-01/compute.json

…osoft.Web to add version 2018-02-01 (#4436)

* Generated from b772c09b4e8132be83594f0a834cf7b363445a3c

Address PR description feedback

* Generated from 61d39f048374e3c8dd07112e7d9e8554e8664ea5

Fix casing

* Packaging update of azure-mgmt-web

* Generated from 66114e58530dd7027b63182defcf1c8f73d1d502

Remove incorrect pagination from examples.

Fix Hosting Environment Network Dependencies pagination

…#4761)

* Generated from d605882bdcb7e402badbf4aeca8d66f20a9d197e

Update managedserviceidentity type enum

Enum is currently missing the ua + sa combination + "none" type. We do support those values in our API and as such need the swagger to reflect that.

* Packaging update of azure-mgmt-web

Add Managed Identity envelope to SitePatchResource

Add Managed Identity envelope to SitePatchResource object to allow PATCH identity operations to a site through Swagger

…ing (#4860)

* Generated from d0b3b0dc2238ba14b6a41ced8e7ce66e3755f279

VnetInfo CertBlob format changed to string

* Packaging update of azure-mgmt-web

Add examples

Add Source Web App Location

Add Api-version 2018-11-01 for WebApps Collection

Add package Tag

Fix path to common definitions

Web new path