Move configuration work to library

Signed-off-by: jcsiadal <jeremy.c.siadal@intel.com>

Update to support show correctly

Signed-off-by: jcsiadal <jeremy.c.siadal@intel.com>

internal/pkg/configure/common.go

@@ -0,0 +1,32 @@
+package configure
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+)
+
+func Configure(s string, v bool) error {
+	if !v {
+		fmt.Printf("################################################################################\n")
+		fmt.Printf("Configuring: %s\n", s)
+	}
+
+	var err error
+	switch s {
+	case "DHCP":
+		err = configureDHCP(v)
+	case "hosts":
+		err = configureHosts(v)
+	case "NFS":
+		err = configureNFS(v)
+	case "SSH":
+		err = configureSSH(v)
+	case "TFTP":
+		err = configureTFTP(v)
+	}
+	if err != nil {
+		return errors.Wrap(err, "Failed to configure "+s)
+	}
+	return nil
+}