SSIS VS17 Unsupported: This version of visual studio is unable to open the following projects dtproj I get this error when trying to open VS17 With SSIS Project written on VS15:
These actions solved my problem:  


Install the latest version of SSDT
Open Visual Studio 2017: Go to: Tools > Extensions And Updates > Search: Microsoft Integration Services Projects > Click: Enable
Restart Visual Studio
In SSIS Project On Solution: Right Click > Reload Project