Move tabwriter to package util

This offloads the "magic numbers" that are used when creating a
tabwriter

pkg/util/tabwriter.go

@@ -0,0 +1,19 @@
+package util
+
+import (
+	"io"
+	"text/tabwriter"
+)
+
+const (
+	tabwriterMinWidth = 6
+	tabwriterWidth    = 4
+	tabwriterPadding  = 3
+	tabwriterPadChar  = ' '
+	tabwriterFlags    = 0
+)
+
+// NewTabWriter returns a tabwriter that translates tabbed columns in input into properly aligned text.
+func NewTabWriter(out io.Writer) *tabwriter.Writer {
+	return tabwriter.NewWriter(out, tabwriterMinWidth, tabwriterWidth, tabwriterPadding, tabwriterPadChar, tabwriterFlags)
+}