Add support for debian-edu builds

Start off by adding in the tasks and graphics data they want

debian/changelog

@@ -6,6 +6,7 @@ debian-cd (3.1.18) UNRELEASED; urgency=medium
     (Closes: #783569)
   * Add YA syslinux package to Recommends.
   * Fix handlinkg of LOGOPNG when we've got "doppelganer" initramfs files
+  * Add support for debian-edu builds
 
  -- Steve McIntyre <93sam@debian.org>  Mon, 20 Apr 2015 12:36:57 +0100
 

tasks/jessie/debian-edu

@@ -0,0 +1,35 @@
+ltsp-client-builder
+debian-edu-archive-keyring-udeb
+debian-edu-install-udeb
+debian-edu-profile-udeb
+eatmydata
+etckeeper
+
+exim4-daemon-heavy
+localechooser
+debian-edu-archive-keyring
+atmel-firmware
+firmware-atheros
+firmware-bnx2
+firmware-bnx2x
+firmware-brcm80211
+firmware-intelwimax
+firmware-ipw2x00
+firmware-ivtv
+firmware-iwlwifi
+firmware-linux-nonfree
+firmware-netxen
+firmware-qlogic
+firmware-ralink
+firmware-realtek
+libertas-firmware
+b43-fwcutter
+wireless-tools
+wpasupplicant
+acpi
+mdetect
+xresprobe
+read-edid
+education-tasks
+debian-edu-config
+debian-edu-install

tasks/stretch/debian-edu

@@ -0,0 +1,35 @@
+ltsp-client-builder
+debian-edu-archive-keyring-udeb
+debian-edu-install-udeb
+debian-edu-profile-udeb
+eatmydata
+etckeeper
+
+exim4-daemon-heavy
+localechooser
+debian-edu-archive-keyring
+atmel-firmware
+firmware-atheros
+firmware-bnx2
+firmware-bnx2x
+firmware-brcm80211
+firmware-intelwimax
+firmware-ipw2x00
+firmware-ivtv
+firmware-iwlwifi
+firmware-linux-nonfree
+firmware-netxen
+firmware-qlogic
+firmware-ralink
+firmware-realtek
+libertas-firmware
+b43-fwcutter
+wireless-tools
+wpasupplicant
+acpi
+mdetect
+xresprobe
+read-edid
+education-tasks
+debian-edu-config
+debian-edu-install