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.

internal/nettests/psiphon.go

@@ -0,0 +1,51 @@
+package nettests
+
+import "github.com/pkg/errors"
+
+// Psiphon test implementation
+type Psiphon struct {
+}
+
+// Run starts the test
+func (h Psiphon) Run(ctl *Controller) error {
+	builder, err := ctl.Session.NewExperimentBuilder(
+		"psiphon",
+	)
+	if err != nil {
+		return err
+	}
+	return ctl.Run(builder, []string{""})
+}
+
+// PsiphonTestKeys contains the test keys
+type PsiphonTestKeys struct {
+	IsAnomaly     bool    `json:"-"`
+	BootstrapTime float64 `json:"bootstrap_time"`
+	Failure       string  `json:"failure"`
+}
+
+// GetTestKeys generates a summary for a test run
+func (h Psiphon) GetTestKeys(tk map[string]interface{}) (interface{}, error) {
+	var (
+		ok       bool
+		testKeys PsiphonTestKeys
+	)
+	if tk["failure"] != nil {
+		testKeys.IsAnomaly = true
+		failure, ok := tk["failure"].(*string)
+		if !ok {
+			return testKeys, errors.New("failure key invalid")
+		}
+		testKeys.Failure = *failure
+	}
+	testKeys.BootstrapTime, ok = tk["bootstrap_time"].(float64)
+	if !ok {
+		return testKeys, errors.New("bootstrap_time key invalid")
+	}
+	return testKeys, nil
+}
+
+// LogSummary writes the summary to the standard output
+func (h Psiphon) LogSummary(s string) error {
+	return nil
+}