packagegroup-self-hosted: move graphics packages to graphics group
The following packages are gui based tools:
xdg-utils # A set of common interfaces for desktop
leafpad # A GTK+ text editor used in Build Appliance
midori # A web browser used in Build Appliance
pcmanfm # PCManFm file manager used in Build Appliance
vte # Virtual terminal emulator GTK+ widget library
Move them to packagegroup-self-hosted-graphics so that we can make
a graphics free self-hosted image by excluding the
packagegroup-self-hosted-graphics.
