Extract privileged command wrapper into util

Without this, it makes the code a bit harder to read.

This fixes it by extracting the method.

Signed-off-by: Jean-Philippe Evrard <open-source@a.spamming.party>

pkg/util/util_test.go

@@ -0,0 +1,31 @@
+package util
+
+import (
+	"reflect"
+	"testing"
+)
+
+func Test_buildHostCommand(t *testing.T) {
+	type args struct {
+		pid     int
+		command []string
+	}
+	tests := []struct {
+		name string
+		args args
+		want []string
+	}{
+		{
+			name: "Ensure command will run with nsenter",
+			args: args{pid: 1, command: []string{"ls", "-Fal"}},
+			want: []string{"/usr/bin/nsenter", "-m/proc/1/ns/mnt", "--", "ls", "-Fal"},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := PrivilegedHostCommand(tt.args.pid, tt.args.command); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("buildHostCommand() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}