* Swagger coverage for Azure Migrate Hub operations

* Adding Operation_List.json to examples

* adding operation result definitions to migrate.json

* Update specification/migrateprojects/resource-manager/Microsoft.Migrate/preview/2018-09-01-preview/migrate.json

Fixing the JSON schema validation for migrate.json

* Update specification/migrateprojects/resource-manager/readme.md

Fixing the code generation path for preview swagger.

* Update specification/migrateprojects/resource-manager/Microsoft.Migrate/preview/2018-09-01-preview/migrate.json

Fixing potential SDK and security errors.

* Update specification/migrateprojects/resource-manager/Microsoft.Migrate/preview/2018-09-01-preview/migrate.json

Fixing potential new SDK errors.

* Proving x-ms-exmaples for response/request payloads for operations.

* Fixing schema validation for azure-sdk-for-go.

* Fixing schema validation for azure-sdk-for-go.

* Added missing patch and delete operations per the feedback.

* Swagger fixes for azure-sdk-for-go

* Swagger fixes for azure-sdk-for-go

* Swagger fixes for azure-sdk-for-go

* Fixing schema validation for azure-sdk-for-go.

* Adding delete method for migrate errors.