WIP rewrite the daemon

cmd subdir does not build on purpose, it's only left in tree to grab old
code and move it to github.com/zrepl/zrepl/daemon

config/config_test.go

@@ -0,0 +1,29 @@
+package config
+
+import (
+	"github.com/kr/pretty"
+	"path/filepath"
+	"testing"
+)
+
+func TestSampleConfigsAreParsedWithoutErrors(t *testing.T) {
+	paths, err := filepath.Glob("./samples/*")
+	if err != nil {
+		t.Errorf("glob failed: %+v", err)
+	}
+
+	for _, p := range paths {
+
+		t.Run(p, func(t *testing.T) {
+			c, err := ParseConfig(p)
+			if err != nil {
+				t.Errorf("error parsing %s:\n%+v", p, err)
+			}
+
+			t.Logf("file: %s", p)
+			t.Log(pretty.Sprint(c))
+		})
+
+	}
+
+}