refactor: nettests is now an internal package (#165)

I'm moving everything into internal packages since this ain't a library.

While there, remove typo that was causing a build breakage.

nettests/nettests_test.go

@@ -1,52 +0,0 @@
-package nettests
-
-import (
-	"io/ioutil"
-	"path"
-	"testing"
-
-	ooni "github.com/ooni/probe-cli"
-	"github.com/ooni/probe-cli/internal/database"
-	"github.com/ooni/probe-cli/utils/shutil"
-)
-
-func newTestingContext(t *testing.T) *ooni.Context {
-	homePath, err := ioutil.TempDir("", "ooniprobetests")
-	if err != nil {
-		t.Fatal(err)
-	}
-	configPath := path.Join(homePath, "config.json")
-	testingConfig := path.Join("..", "testdata", "testing-config.json")
-	shutil.Copy(testingConfig, configPath, false)
-	ctx := ooni.NewContext(configPath, homePath)
-	swName := "ooniprobe-cli-tests"
-	swVersion := "3.0.0-alpha"
-	err = ctx.Init(swName, swVersion)
-	if err != nil {
-		t.Fatal(err)
-	}
-	return ctx
-}
-
-func TestCreateContext(t *testing.T) {
-	newTestingContext(t)
-}
-
-func TestRun(t *testing.T) {
-	ctx := newTestingContext(t)
-	sess, err := ctx.NewSession()
-	if err != nil {
-		t.Fatal(err)
-	}
-	network, err := database.CreateNetwork(ctx.DB, sess)
-	if err != nil {
-		t.Fatal(err)
-	}
-	res, err := database.CreateResult(ctx.DB, ctx.Home, "middlebox", network.ID)
-	if err != nil {
-		t.Fatal(err)
-	}
-	nt := HTTPInvalidRequestLine{}
-	ctl := NewController(nt, ctx, res, sess)
-	nt.Run(ctl)
-}