Move configuration work to library

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

internal/pkg/configure/dhcp_main_test.go

@@ -0,0 +1,27 @@
+package configure
+
+import (
+	"path"
+	"testing"
+
+	"github.com/hpcng/warewulf/internal/pkg/buildconfig"
+)
+
+func TestDhcpTemplateFile(t *testing.T) {
+	tests := []struct {
+		parameter string
+		expected  string
+	}{
+		{"", path.Join(buildconfig.SYSCONFDIR(), "warewulf/dhcp/default-dhcpd.conf")},
+		{"default", path.Join(buildconfig.SYSCONFDIR(), "warewulf/dhcp/default-dhcpd.conf")},
+		{"static", path.Join(buildconfig.SYSCONFDIR(), "warewulf/dhcp/static-dhcpd.conf")},
+		{"/test/absolute/path.conf", "/test/absolute/path.conf"},
+	}
+	for _, tt := range tests {
+		actual := dhcpTemplateFile(tt.parameter)
+		if actual != tt.expected {
+			t.Errorf("dhcpTemplateFile(%v) expected: %v, actual: %v",
+				tt.parameter, tt.expected, actual)
+		}
+	}
+}