Adding new version 2020-07-01-preview for DataMove (#10059)

* Adding new version 2020-07-01-preview for DataMove

* Revert change in 2016-12-01

* Revert "Revert change in 2016-12-01"

This reverts commit 5d13f57.

* Adding missed properties in previous versions

* Fix lintdiff failure

* Update

* Adding response code 200 for post operations in spec

* Updating readme.md

* Update

* Fix camel casing in resource path and prettier check

* Fix avocado check

* Update

* Adding error response confirming to ARM specification

* Updating tag package

* Updating ErrorResponse to NewErrorResponse

* Update

* Revert "Update"

This reverts commit 9bbdfed.

* Remove long running operation tag

* Undo change in 2019-06-15

* Removing existing definitions from latest version

* Updating according to comments

* Updating path resource type name to camel case

* Fixing prettier check

* Update

* Prettier fix