vendor: update dependencies with github.com/kardianos/govendor

vendor.conf

vendor/github.com/Azure/azure-sdk-for-go/.gitignore

vendor/github.com/Azure/azure-sdk-for-go/.travis.yml

...r/github.com/aristanetworks/goarista/monotime/nanotime.go

vendor/github.com/ethereum/ethash/.gitignore

vendor/github.com/ethereum/ethash/.travis.yml

vendor/github.com/fatih/color/.travis.yml

vendor/github.com/fatih/color/README.md

vendor/github.com/fatih/color/color.go

vendor/github.com/gizak/termui/.gitignore

vendor/github.com/gizak/termui/.travis.yml

vendor/github.com/gizak/termui/README.md

vendor/github.com/gizak/termui/barchart.go

vendor/github.com/gizak/termui/block.go

vendor/github.com/gizak/termui/block_common.go

vendor/github.com/gizak/termui/block_windows.go

vendor/github.com/gizak/termui/buffer.go

vendor/github.com/gizak/termui/canvas.go

vendor/github.com/gizak/termui/config.py

vendor/github.com/gizak/termui/doc.go