Haitao Chen

so these 2 condition (longRunningOperation, and defining 400 with responses section) should not be combined together, we need to kick out one of them, I vote to kick out ```"x-ms-long-running-operation":...

> The docs indicating that 400 returns a DeploymentValidateResult seems anti-HTTP and bad design. 400 means that the operation did not work at all. exactly, this should be a 200...