Adds more go versions to travis (#790)
Adds more go versions to travis (#790)

* Adds more go versions to travis

* Remove go 1.6

Azure/azure-sdk-for-go,curoverse/azure-sdk-for-go,marstr/azure-sdk-for-go,marstr/azure-sdk-for-go,Azure/azure-sdk-for-go,Azure/azure-sdk-for-go,curoverse/azure-sdk-for-go,Azure/azure-sdk-for-go,marstr/azure-sdk-for-go