Proposal: use Makefile to run shell scripts

[itscaro]

Use Makefile instead of shell scripts

Expected Behaviour

Tasks are organized in makefiles folder along with the main Makefile at root.
Current scripts will call the corresponding makefile rule in order to maintain backward compatibility.

build.sh calls make build
build_redist.sh calls make build_redist
test/version.sh calls make test_version
deploy_samples calls make deploy_samples

make test runs go test in docker image to test against a specific version of Go

[rgee0]

Derek add label: proposal

[alexellis]

Will come back to this.

[alexellis]

We have a Makefile now. Closing.