This is something which I believe should have been available by default.
Thou, the below steps to get that is not so difficult and also little bit of fun.
Step 1. Download gconf-editor
# yum install gconf-editor
Step 2. Open gconf-editor
# gconf-editor
Step 3. Go to / -> desktop -> gnome -> shell -> windows
Step4. Now click on value of button_layout and change it to:
"menu:minimize,maximize,close"
Step 5. Logout and Login back ...... it's done! :)
Note: if you want some space between menu buttons use "space" for eg:
"menu:minimize,maximize,space,close"
