Merge in changes from @asnowfix fork

[ringods]

Merge in changes from the fork of @asnowfix. Let us first stabilize this branch via this PR.

TODO:

• Make unit tests run
• Fix linting issues
• Activate Github Actions
• Remove TravisCI & CircleCI setup

[ringods]

Hello @asnowfix, with this PR I am pulling in all the changes which reside in your fork of this repo. The merge commit however still has some problems. I'm not so much a Go developer so I need some input to get the unit test running. On our setup, we were already on Go 1.12, so I assume that the failure has to do with this. Could you have a look?

$ make test
ME=ringods
INTERACTIVE=1
PKGS=github.com/terra-farm/go-virtualbox github.com/terra-farm/go-virtualbox/cmd/vbhostd
go test -v ./...
panic: testing: Verbose called before Init

goroutine 1 [running]:
testing.Verbose(...)
        /usr/local/Cellar/go/1.13.4/libexec/src/testing/testing.go:389
github.com/terra-farm/go-virtualbox.logF(0x118c369, 0x11, 0x0, 0x0, 0x0)
        /Users/ringods/Projects/terra-farm/go-virtualbox/log_test.go:19 +0xe5
github.com/terra-farm/go-virtualbox.init.0()
        /Users/ringods/Projects/terra-farm/go-virtualbox/log_test.go:28 +0x6d
FAIL    github.com/terra-farm/go-virtualbox     0.241s
?       github.com/terra-farm/go-virtualbox/cmd/vbhostd [no test files]
FAIL
make: *** [test] Error 1

[ringods]

Only after I submitted the request for help, I noticed that the tests failed on my laptop but worked on TravisCI. The difference was the Go version. My laptop was running Go 1.13 and TravisCI 1.12. So I added Go 1.13 to the Travis setup to verify the failure I noticed on my laptop.

So a search around the webs for golang 1.13 testing rendered me the following issue:

golang/go#31859

In another issue, I found an example workaround:

flipt-io/flipt@cd7fb49#diff-77b87a2786da4b38e7dd9d4fd463953c

Commit 44041a6 contains a similar fix which now also makes the tests work on Go 1.13.

[ringods]

@VoyTechnology do you have some time to review? Please let me know. If you don't have time, I will go forward as-is with merging this.

[ringods]

Going forward with this.