fix prepare to use only supported endpoints
fix prepare to use only supported endpoints

Microsoft/vso-agent,Microsoft/vso-agent,DanielBMann9000/vso-agent,AlexRukhlin/vso-agent,AlexRukhlin/vso-agent,Microsoft/vso-agent,AlexRukhlin/vso-agent,AlexRukhlin/vso-agent,DanielBMann9000/vso-agent,Microsoft/vso-agent,DanielBMann9000/vso-agent,AlexRukhlin/vso-agent,Microsoft/vso-agent,DanielBMann9000/vso-agent,Microsoft/vso-agent,DanielBMann9000/vso-agent