Refactoring: use gRPC server config logic from SDK

[bzz]

Part of the bblfsh/client-go#102, migrates to bblfsh/sdk#329

TODOs:

• refactor bblfshd server to use server gRPC configuration from Shared gRPC server config between bblfshd/driver sdk#329
• update SDK in vendored deps of bblfshd (as soon as as soon as Shared gRPC server config between bblfshd/driver sdk#329 merged and new SDK version is released) v2.8.0 🚀
• fix CI

[bzz]

Changed to WIP as I'm looking into CI failure.

[bzz]

Tested and ready for review. CI is expected to be red until all TODO from PR description are not finished.

[bzz]

Review feedback addressed in 4ae7a38, ready for another round.

[bzz]

2 tests are failing on CI 🤔

--- FAIL: TestDaemonInstallDriver (7.91s)
	Error Trace:	daemon_test.go:42
	Error:		Expected nil, but got: Invalid status code returned when fetching blob 404
		
--- FAIL: TestDriverInstance_State (6.33s)
	Error Trace:	driver_test.go:95
			driver_test.go:47
	Error:		Received unexpected error Invalid status code returned when fetching blob 404
			github.com/bblfsh/bblfshd/vendor/github.com/containers/image/docker.(*dockerImageSource).GetBlob
				/go/src/github.com/bblfsh/bblfshd/vendor/github.com/containers/image/docker/docker_image_src.go:173
			github.com/bblfsh/bblfshd/vendor/github.com/containers/image/image.(*manifestSchema2).ConfigBlob
				/go/src/github.com/bblfsh/bblfshd/vendor/github.com/containers/image/image/docker_schema2.go:107
			github.com/bblfsh/bblfshd/vendor/github.com/containers/image/image.(*manifestSchema2).OCIConfig
				/go/src/github.com/bblfsh/bblfshd/vendor/github.com/containers/image/image/docker_schema2.go:86
			github.com/bblfsh/bblfshd/vendor/github.com/containers/image/image.(*sourcedImage).OCIConfig
				<autogenerated>:1
			github.com/bblfsh/bblfshd/runtime.(*driverImage).WriteTo
				/go/src/github.com/bblfsh/bblfshd/runtime/image.go:80
			github.com/bblfsh/bblfshd/runtime.(*storage).Install
				/go/src/github.com/bblfsh/bblfshd/runtime/storage.go:61
			github.com/bblfsh/bblfshd/runtime.(*Runtime).InstallDriver
				/go/src/github.com/bblfsh/bblfshd/runtime/runtime.go:62
			github.com/bblfsh/bblfshd/daemon.NewRuntime
				/go/src/github.com/bblfsh/bblfshd/daemon/driver_test.go:94
			github.com/bblfsh/bblfshd/daemon.TestDriverInstance_State
				/go/src/github.com/bblfsh/bblfshd/daemon/driver_test.go:47
			testing.tRunner
				/usr/local/go/src/testing/testing.go:777
			runtime.goexit
				/usr/local/go/src/runtime/asm_amd64.s:2361

[juanjux]

Since CI seems to be working I'm merging.