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/whatsapp.go

@@ -1,59 +0,0 @@
-package nettests
-
-// WhatsApp test implementation
-type WhatsApp struct {
-}
-
-// Run starts the test
-func (h WhatsApp) Run(ctl *Controller) error {
-	builder, err := ctl.Session.NewExperimentBuilder(
-		"whatsapp",
-	)
-	if err != nil {
-		return err
-	}
-	return ctl.Run(builder, []string{""})
-}
-
-// WhatsAppTestKeys for the test
-type WhatsAppTestKeys struct {
-	RegistrationServerBlocking bool `json:"registration_server_blocking"`
-	WebBlocking                bool `json:"whatsapp_web_blocking"`
-	EndpointsBlocking          bool `json:"whatsapp_endpoints_blocking"`
-	IsAnomaly                  bool `json:"-"`
-}
-
-// GetTestKeys generates a summary for a test run
-func (h WhatsApp) GetTestKeys(tk map[string]interface{}) (interface{}, error) {
-	var (
-		webBlocking          bool
-		registrationBlocking bool
-		endpointsBlocking    bool
-	)
-
-	var computeBlocking = func(key string) bool {
-		const blk = "blocked"
-		if tk[key] == nil {
-			return false
-		}
-		if tk[key].(string) == blk {
-			return true
-		}
-		return false
-	}
-	registrationBlocking = computeBlocking("registration_server_status")
-	webBlocking = computeBlocking("whatsapp_web_status")
-	endpointsBlocking = computeBlocking("whatsapp_endpoints_status")
-
-	return WhatsAppTestKeys{
-		RegistrationServerBlocking: registrationBlocking,
-		WebBlocking:                webBlocking,
-		EndpointsBlocking:          endpointsBlocking,
-		IsAnomaly:                  registrationBlocking || webBlocking || endpointsBlocking,
-	}, nil
-}
-
-// LogSummary writes the summary to the standard output
-func (h WhatsApp) LogSummary(s string) error {
-	return nil
-}